15342987 has 8 divisors (see below), whose sum is σ = 22317120. Its totient is φ = 9298760.

The previous prime is 15342973. The next prime is 15342989. The reversal of 15342987 is 78924351.

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 15342987 - 2²⁰ = 14294411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15342989) 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, 232437 + ... + 232502.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^15342987 is an apocalyptic number.

15342987 is a deficient number, since it is larger than the sum of its proper divisors (6974133).

15342987 is a wasteful number, since it uses less digits than its factorization.

15342987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464953.

The product of its digits is 60480, while the sum is 39.

The square root of 15342987 is about 3917.0125095537. The cubic root of 15342987 is about 248.4867899275.

The spelling of 15342987 in words is "fifteen million, three hundred forty-two thousand, nine hundred eighty-seven".