15380056 has 8 divisors (see below), whose sum is σ = 28837620. Its totient is φ = 7690024.

The previous prime is 15380047. The next prime is 15380083. The reversal of 15380056 is 65008351.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×15380056² = 473092245126272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 961246 + ... + 961261.

Almost surely, 2^15380056 is an apocalyptic number.

It is an amenable number.

15380056 is a deficient number, since it is larger than the sum of its proper divisors (13457564).

15380056 is a wasteful number, since it uses less digits than its factorization.

15380056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922513 (or 1922509 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 15380056 is about 3921.7414499174. The cubic root of 15380056 is about 248.6867455302.

The spelling of 15380056 in words is "fifteen million, three hundred eighty thousand, fifty-six".