30861384 has 16 divisors (see below), whose sum is σ = 77153520. Its totient is φ = 10287120.

The previous prime is 30861359. The next prime is 30861431. The reversal of 30861384 is 48316803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642922 + ... + 642969.

It is an arithmetic number, because the mean of its divisors is an integer number (4822095).

Almost surely, 2^30861384 is an apocalyptic number.

It is an amenable number.

30861384 is an abundant number, since it is smaller than the sum of its proper divisors (46292136).

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

30861384 is a wasteful number, since it uses less digits than its factorization.

30861384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285900 (or 1285896 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 30861384 is about 5555.3023320068. The cubic root of 30861384 is about 313.6691445220.

The spelling of 30861384 in words is "thirty million, eight hundred sixty-one thousand, three hundred eighty-four".