30814938 has 64 divisors (see below), whose sum is σ = 85386240. Its totient is φ = 8002800.

The previous prime is 30814919. The next prime is 30814981. The reversal of 30814938 is 83941803.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (1334160).

Almost surely, 2^30814938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30814938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42693120).

30814938 is an abundant number, since it is smaller than the sum of its proper divisors (54571302).

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

30814938 is a wasteful number, since it uses less digits than its factorization.

30814938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7440 (or 7434 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30814938 is about 5551.1204274453. The cubic root of 30814938 is about 313.5117094594.

The spelling of 30814938 in words is "thirty million, eight hundred fourteen thousand, nine hundred thirty-eight".