15400072 has 16 divisors (see below), whose sum is σ = 29050560. Its totient is φ = 7653264.

The previous prime is 15400057. The next prime is 15400093. The reversal of 15400072 is 27000451.

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, 4428 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (1815660).

Almost surely, 2^15400072 is an apocalyptic number.

It is an amenable number.

15400072 is a deficient number, since it is larger than the sum of its proper divisors (13650488).

15400072 is a wasteful number, since it uses less digits than its factorization.

15400072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11700 (or 11696 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 15400072 is about 3924.2925477084. The cubic root of 15400072 is about 248.7945812035.

The spelling of 15400072 in words is "fifteen million, four hundred thousand, seventy-two".