30438774 has 32 divisors (see below), whose sum is σ = 68323680. Its totient is φ = 10044000.

The previous prime is 30438757. The next prime is 30438803. The reversal of 30438774 is 47783403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2664 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (2135115).

Almost surely, 2^30438774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30438774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34161840).

30438774 is an abundant number, since it is smaller than the sum of its proper divisors (37884906).

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

30438774 is a wasteful number, since it uses less digits than its factorization.

30438774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693 (or 5687 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 30438774 is about 5517.1345823715. The cubic root of 30438774 is about 312.2307833917.

The spelling of 30438774 in words is "thirty million, four hundred thirty-eight thousand, seven hundred seventy-four".