30987394 has 8 divisors (see below), whose sum is σ = 48502080. Its totient is φ = 14820036.

The previous prime is 30987377. The next prime is 30987421. The reversal of 30987394 is 49378903.

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

It is a super-2 number, since 2×30987394² = 1920437173822472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30987394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336774 + ... + 336865.

It is an arithmetic number, because the mean of its divisors is an integer number (6062760).

Almost surely, 2^30987394 is an apocalyptic number.

30987394 is a deficient number, since it is larger than the sum of its proper divisors (17514686).

30987394 is a wasteful number, since it uses less digits than its factorization.

30987394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673664.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 30987394 is about 5566.6321955021. The cubic root of 30987394 is about 314.0954785580.

The spelling of 30987394 in words is "thirty million, nine hundred eighty-seven thousand, three hundred ninety-four".