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253087972 = 22109580477
BaseRepresentation
bin11110001010111…
…01000011100100
3122122020012102121
433011131003210
51004242303342
641040315324
76162132544
oct1705350344
9578205377
10253087972
1111a952815
1270912b44
13405840c7
1425881324
1517344067
hexf15d0e4

253087972 has 12 divisors (see below), whose sum is σ = 446968060. Its totient is φ = 125382816.

The previous prime is 253087969. The next prime is 253087979. The reversal of 253087972 is 279780352.

253087972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 71808676 + 181279296 = 8474^2 + 13464^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (253087979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289803 + ... + 290674.

Almost surely, 2253087972 is an apocalyptic number.

It is an amenable number.

253087972 is a deficient number, since it is larger than the sum of its proper divisors (193880088).

253087972 is a wasteful number, since it uses less digits than its factorization.

253087972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580590 (or 580588 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 253087972 is about 15908.7388563644. The cubic root of 253087972 is about 632.5436524107.

The spelling of 253087972 in words is "two hundred fifty-three million, eighty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 4 109 218 436 580477 1160954 2321908 63271993 126543986 253087972