15340987 has 12 divisors (see below), whose sum is σ = 16479760. Its totient is φ = 14276736.

The previous prime is 15340943. The next prime is 15341047. The reversal of 15340987 is 78904351.

It is not a de Polignac number, because 15340987 - 2⁷ = 15340859 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15340907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31258 + ... + 31744.

Almost surely, 2^15340987 is an apocalyptic number.

15340987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

15340987 is a deficient number, since it is larger than the sum of its proper divisors (1138773).

15340987 is a wasteful number, since it uses less digits than its factorization.

15340987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 15340987 is about 3916.7572046273. The cubic root of 15340987 is about 248.4759924825.

The spelling of 15340987 in words is "fifteen million, three hundred forty thousand, nine hundred eighty-seven".