15391056 has 20 divisors (see below), whose sum is σ = 39760352. Its totient is φ = 5130336.

The previous prime is 15391049. The next prime is 15391081. The reversal of 15391056 is 65019351.

15391056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160276 + ... + 160371.

Almost surely, 2^15391056 is an apocalyptic number.

15391056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15391056 is an abundant number, since it is smaller than the sum of its proper divisors (24369296).

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

15391056 is a wasteful number, since it uses less digits than its factorization.

15391056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320658 (or 320652 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 15391056 is about 3923.1436374418. The cubic root of 15391056 is about 248.7460193129.

The spelling of 15391056 in words is "fifteen million, three hundred ninety-one thousand, fifty-six".