30881952 has 96 divisors (see below), whose sum is σ = 93058560. Its totient is φ = 9953280.

The previous prime is 30881941. The next prime is 30881971. The reversal of 30881952 is 25918803.

It is a tau number, because it is divible by the number of its divisors (96).

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

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, 26208 + ... + 27360.

It is an arithmetic number, because the mean of its divisors is an integer number (969360).

Almost surely, 2^30881952 is an apocalyptic number.

30881952 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30881952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46529280).

30881952 is an abundant number, since it is smaller than the sum of its proper divisors (62176608).

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

30881952 is a wasteful number, since it uses less digits than its factorization.

30881952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 30881952 is about 5557.1532280476. The cubic root of 30881952 is about 313.7388121067.

The spelling of 30881952 in words is "thirty million, eight hundred eighty-one thousand, nine hundred fifty-two".