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12938652 = 2232359407
BaseRepresentation
bin110001010110…
…110110011100
3220100100111100
4301112312130
511303014102
61141153100
7214656006
oct61266634
926310440
1012938652
117338001
1243bb790
1328b030c
141a0b376
151208a1c
hexc56d9c

12938652 has 18 divisors (see below), whose sum is σ = 32706128. Its totient is φ = 4312872.

The previous prime is 12938623. The next prime is 12938663. The reversal of 12938652 is 25683921.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 359407 = 12938652 / (1 + 2 + 9 + 3 + 8 + 6 + 5 + 2).

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 5 ways as a sum of consecutive naturals, for example, 179668 + ... + 179739.

Almost surely, 212938652 is an apocalyptic number.

12938652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12938652 is an abundant number, since it is smaller than the sum of its proper divisors (19767476).

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

12938652 is a wasteful number, since it uses less digits than its factorization.

12938652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359417 (or 359412 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12938652 is about 3597.0337779899. The cubic root of 12938652 is about 234.7630144499.

It can be divided in two parts, 129 and 38652, that added together give a triangular number (38781 = T278).

The spelling of 12938652 in words is "twelve million, nine hundred thirty-eight thousand, six hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 359407 718814 1078221 1437628 2156442 3234663 4312884 6469326 12938652