30525948 has 72 divisors (see below), whose sum is σ = 84389760. Its totient is φ = 9262080.

The previous prime is 30525919. The next prime is 30525949. The reversal of 30525948 is 84952503.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30525949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18168 + ... + 19776.

It is an arithmetic number, because the mean of its divisors is an integer number (1172080).

Almost surely, 2^30525948 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 30525948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42194880).

30525948 is an abundant number, since it is smaller than the sum of its proper divisors (53863812).

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

30525948 is a wasteful number, since it uses less digits than its factorization.

30525948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 30525948 is about 5525.0292306919. The cubic root of 30525948 is about 312.5285665619.

The spelling of 30525948 in words is "thirty million, five hundred twenty-five thousand, nine hundred forty-eight".