15122887 has 8 divisors (see below), whose sum is σ = 16318400. Its totient is φ = 13932000.

The previous prime is 15122869. The next prime is 15122897. The reversal of 15122887 is 78822151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15122887 - 2⁷ = 15122759 is a prime.

It is a super-2 number, since 2×15122887² = 457403422429538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15122857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8989 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (2039800).

Almost surely, 2^15122887 is an apocalyptic number.

15122887 is a deficient number, since it is larger than the sum of its proper divisors (1195513).

15122887 is a wasteful number, since it uses less digits than its factorization.

15122887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313.

The product of its digits is 8960, while the sum is 34.

The square root of 15122887 is about 3888.8156294687. The cubic root of 15122887 is about 247.2928552815.

The spelling of 15122887 in words is "fifteen million, one hundred twenty-two thousand, eight hundred eighty-seven".