30895872 has 108 divisors (see below), whose sum is σ = 95769576. Its totient is φ = 8816640.

The previous prime is 30895867. The next prime is 30895883. The reversal of 30895872 is 27859803.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37222 + ... + 38042.

Almost surely, 2^30895872 is an apocalyptic number.

30895872 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 30895872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47884788).

30895872 is an abundant number, since it is smaller than the sum of its proper divisors (64873704).

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

30895872 is an equidigital number, since it uses as much as digits as its factorization.

30895872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 30895872 is about 5558.4055267675. The cubic root of 30895872 is about 313.7859441473.

The spelling of 30895872 in words is "thirty million, eight hundred ninety-five thousand, eight hundred seventy-two".