30461388 has 12 divisors (see below), whose sum is σ = 71076600. Its totient is φ = 10153792.

The previous prime is 30461369. The next prime is 30461393. The reversal of 30461388 is 88316403.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1269213 + ... + 1269236.

It is an arithmetic number, because the mean of its divisors is an integer number (5923050).

Almost surely, 2^30461388 is an apocalyptic number.

It is an amenable number.

30461388 is an abundant number, since it is smaller than the sum of its proper divisors (40615212).

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

30461388 is a wasteful number, since it uses less digits than its factorization.

30461388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538456 (or 2538454 counting only the distinct ones).

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

The square root of 30461388 is about 5519.1836352852. The cubic root of 30461388 is about 312.3080865390.

The spelling of 30461388 in words is "thirty million, four hundred sixty-one thousand, three hundred eighty-eight".