30079987 has 12 divisors (see below), whose sum is σ = 36520720. Its totient is φ = 24264576.

The previous prime is 30079981. The next prime is 30079999. The reversal of 30079987 is 78997003.

It is not a de Polignac number, because 30079987 - 2³ = 30079979 is a prime.

It is a hoax number, since the sum of its digits (43) 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 (30079981) 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, 5412 + ... + 9457.

Almost surely, 2^30079987 is an apocalyptic number.

30079987 is a deficient number, since it is larger than the sum of its proper divisors (6440733).

30079987 is a wasteful number, since it uses less digits than its factorization.

30079987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14910 (or 14893 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 30079987 is about 5484.5224951677. The cubic root of 30079987 is about 310.9991590911. Note that the first 3 decimals are identical.

The spelling of 30079987 in words is "thirty million, seventy-nine thousand, nine hundred eighty-seven".