30904032 has 48 divisors (see below), whose sum is σ = 85397760. Its totient is φ = 9758592.

The previous prime is 30904001. The next prime is 30904033. The reversal of 30904032 is 23040903.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30904033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6648 + ... + 10295.

It is an arithmetic number, because the mean of its divisors is an integer number (1779120).

Almost surely, 2^30904032 is an apocalyptic number.

30904032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30904032 is an abundant number, since it is smaller than the sum of its proper divisors (54493728).

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

30904032 is a wasteful number, since it uses less digits than its factorization.

30904032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16975 (or 16967 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30904032 is about 5559.1395017574. The cubic root of 30904032 is about 313.8135666931.

Adding to 30904032 its reverse (23040903), we get a palindrome (53944935).

The spelling of 30904032 in words is "thirty million, nine hundred four thousand, thirty-two".