30864984 has 64 divisors (see below), whose sum is σ = 79564800. Its totient is φ = 9974016.

The previous prime is 30864941. The next prime is 30864989. The reversal of 30864984 is 48946803.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30864989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138297 + ... + 138519.

It is an arithmetic number, because the mean of its divisors is an integer number (1243200).

Almost surely, 2^30864984 is an apocalyptic number.

It is an amenable number.

30864984 is an abundant number, since it is smaller than the sum of its proper divisors (48699816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30864984 is a wasteful number, since it uses less digits than its factorization.

30864984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 30864984 is about 5555.6263373269. The cubic root of 30864984 is about 313.6813406159.

The spelling of 30864984 in words is "thirty million, eight hundred sixty-four thousand, nine hundred eighty-four".