30725424 has 60 divisors (see below), whose sum is σ = 89736816. Its totient is φ = 9795456.

The previous prime is 30725423. The next prime is 30725437. The reversal of 30725424 is 42452703.

It is not an unprimeable number, because it can be changed into a prime (30725423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1327 + ... + 7950.

Almost surely, 2^30725424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30725424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44868408).

30725424 is an abundant number, since it is smaller than the sum of its proper divisors (59011392).

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

30725424 is a wasteful number, since it uses less digits than its factorization.

30725424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314 (or 9305 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 30725424 is about 5543.0518669773. The cubic root of 30725424 is about 313.2078427106.

The spelling of 30725424 in words is "thirty million, seven hundred twenty-five thousand, four hundred twenty-four".