12402724 has 18 divisors (see below), whose sum is σ = 23058770. Its totient is φ = 5836032.

The previous prime is 12402713. The next prime is 12402737. The reversal of 12402724 is 42720421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6594624 + 5808100 = 2568^2 + 2410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12402695 and 12402704.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4209 + ... + 6520.

Almost surely, 2^12402724 is an apocalyptic number.

It is an amenable number.

12402724 is a deficient number, since it is larger than the sum of its proper divisors (10656046).

12402724 is a wasteful number, since it uses less digits than its factorization.

12402724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10767 (or 10748 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 12402724 is about 3521.7501331014. The cubic root of 12402724 is about 231.4758529767.

The spelling of 12402724 in words is "twelve million, four hundred two thousand, seven hundred twenty-four".