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12900252 = 2231075021
BaseRepresentation
bin110001001101…
…011110011100
3220021101211010
4301031132130
511300302002
61140255220
7214436031
oct61153634
926241733
1012900252
117311172
1243a1510
1328989b1
1419db388
1511ec46c
hexc4d79c

12900252 has 12 divisors (see below), whose sum is σ = 30100616. Its totient is φ = 4300080.

The previous prime is 12900227. The next prime is 12900289. The reversal of 12900252 is 25200921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537499 + ... + 537522.

Almost surely, 212900252 is an apocalyptic number.

12900252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12900252 is an abundant number, since it is smaller than the sum of its proper divisors (17200364).

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

12900252 is a wasteful number, since it uses less digits than its factorization.

12900252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075028 (or 1075026 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 12900252 is about 3591.6920803432. The cubic root of 12900252 is about 234.5305370434.

The spelling of 12900252 in words is "twelve million, nine hundred thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 12 1075021 2150042 3225063 4300084 6450126 12900252