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253135750 = 2537791831
BaseRepresentation
bin11110001011010…
…00101110000110
3122122022121222011
433011220232012
51004300321000
641041324434
76162422050
oct1705505606
9578277864
10253135750
1111a9856aa
127093671a
134059ca8a
14258948d0
15173532ba
hexf168b86

253135750 has 64 divisors (see below), whose sum is σ = 548720640. Its totient is φ = 85644000.

The previous prime is 253135747. The next prime is 253135789. The reversal of 253135750 is 57531352.

253135750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137335 + ... + 139165.

It is an arithmetic number, because the mean of its divisors is an integer number (8573760).

Almost surely, 2253135750 is an apocalyptic number.

253135750 is an abundant number, since it is smaller than the sum of its proper divisors (295584890).

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

253135750 is a wasteful number, since it uses less digits than its factorization.

253135750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 253135750 is about 15910.2404130170. The cubic root of 253135750 is about 632.5834538136.

The spelling of 253135750 in words is "two hundred fifty-three million, one hundred thirty-five thousand, seven hundred fifty".

Divisors: 1 2 5 7 10 14 25 35 50 70 79 125 158 175 250 350 395 553 790 875 1106 1750 1831 1975 2765 3662 3950 5530 9155 9875 12817 13825 18310 19750 25634 27650 45775 64085 69125 91550 128170 138250 144649 228875 289298 320425 457750 640850 723245 1012543 1446490 1602125 2025086 3204250 3616225 5062715 7232450 10125430 18081125 25313575 36162250 50627150 126567875 253135750