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253708272 = 243217611699
BaseRepresentation
bin11110001111101…
…00011111110000
3122200101201022200
433013310133300
51004422131042
641101503200
76200325156
oct1707643760
9580351280
10253708272
11120236864
1270b71b00
134074054c
14259a33d6
1517417c4c
hexf1f47f0

253708272 has 120 divisors (see below), whose sum is σ = 764571600. Its totient is φ = 78243840.

The previous prime is 253708219. The next prime is 253708277. The reversal of 253708272 is 272807352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253708277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148479 + ... + 150177.

It is an arithmetic number, because the mean of its divisors is an integer number (6371430).

Almost surely, 2253708272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253708272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382285800).

253708272 is an abundant number, since it is smaller than the sum of its proper divisors (510863328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253708272 is a wasteful number, since it uses less digits than its factorization.

253708272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 253708272 is about 15928.2224997016. Note that the first 3 decimals coincide. The cubic root of 253708272 is about 633.0600034462.

The spelling of 253708272 in words is "two hundred fifty-three million, seven hundred eight thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 34 36 48 51 61 68 72 102 122 136 144 153 183 204 244 272 306 366 408 488 549 612 732 816 976 1037 1098 1224 1464 1699 2074 2196 2448 2928 3111 3398 4148 4392 5097 6222 6796 8296 8784 9333 10194 12444 13592 15291 16592 18666 20388 24888 27184 28883 30582 37332 40776 49776 57766 61164 74664 81552 86649 103639 115532 122328 149328 173298 207278 231064 244656 259947 310917 346596 414556 462128 519894 621834 693192 829112 932751 1039788 1243668 1386384 1658224 1761863 1865502 2079576 2487336 3523726 3731004 4159152 4974672 5285589 7047452 7462008 10571178 14094904 14924016 15856767 21142356 28189808 31713534 42284712 63427068 84569424 126854136 253708272