12905724 has 24 divisors (see below), whose sum is σ = 32430160. Its totient is φ = 3970944.

The previous prime is 12905723. The next prime is 12905749. The reversal of 12905724 is 42750921.

It is a junction number, because it is equal to n+sod(n) for n = 12905691 and 12905700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41209 + ... + 41520.

Almost surely, 2^12905724 is an apocalyptic number.

It is an amenable number.

12905724 is an abundant number, since it is smaller than the sum of its proper divisors (19524436).

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

12905724 is a wasteful number, since it uses less digits than its factorization.

12905724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82749 (or 82747 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 12905724 is about 3592.4537575312. The cubic root of 12905724 is about 234.5636932351.

The spelling of 12905724 in words is "twelve million, nine hundred five thousand, seven hundred twenty-four".