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252506680 = 2356312667
BaseRepresentation
bin11110000110011…
…11001000111000
3122121010200001021
433003033020320
51004120203210
641020032224
76154162036
oct1703171070
9577120037
10252506680
1111a596008
1270692674
134040c64a
142576d556
151727bbda
hexf0cf238

252506680 has 16 divisors (see below), whose sum is σ = 568140120. Its totient is φ = 101002656.

The previous prime is 252506651. The next prime is 252506747. The reversal of 252506680 is 86605252.

252506680 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 3 ways as a sum of consecutive naturals, for example, 3156294 + ... + 3156373.

Almost surely, 2252506680 is an apocalyptic number.

252506680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252506680 is an abundant number, since it is smaller than the sum of its proper divisors (315633440).

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

252506680 is a wasteful number, since it uses less digits than its factorization.

252506680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6312678 (or 6312674 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 252506680 is about 15890.4587724836. The cubic root of 252506680 is about 632.0590061342.

The spelling of 252506680 in words is "two hundred fifty-two million, five hundred six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 6312667 12625334 25250668 31563335 50501336 63126670 126253340 252506680