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30827272 = 2372194139
BaseRepresentation
bin111010110011…
…0001100001000
32011000012001211
41311212030020
530342433042
63020422504
7523012300
oct165461410
964005054
1030827272
1116445a93
12a3a7a34
1365046b8
144146600
152a8e017
hex1d66308

30827272 has 48 divisors (see below), whose sum is σ = 70794000. Its totient is φ = 12513312.

The previous prime is 30827267. The next prime is 30827309. The reversal of 30827272 is 27272803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5379 + ... + 9517.

It is an arithmetic number, because the mean of its divisors is an integer number (1474875).

Almost surely, 230827272 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 30827272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35397000).

30827272 is an abundant number, since it is smaller than the sum of its proper divisors (39966728).

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

30827272 is a wasteful number, since it uses less digits than its factorization.

30827272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 30827272 is about 5552.2312631950. The cubic root of 30827272 is about 313.5535326559.

The spelling of 30827272 in words is "thirty million, eight hundred twenty-seven thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 19 28 38 49 56 76 98 133 152 196 266 392 532 931 1064 1862 3724 4139 7448 8278 16556 28973 33112 57946 78641 115892 157282 202811 231784 314564 405622 550487 629128 811244 1100974 1622488 2201948 3853409 4403896 7706818 15413636 30827272