30880780 has 36 divisors (see below), whose sum is σ = 75439728. Its totient is φ = 10587360.

The previous prime is 30880763. The next prime is 30880783. The reversal of 30880780 is 8708803.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30880783) 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, 14776 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (2095548).

Almost surely, 2^30880780 is an apocalyptic number.

It is an amenable number.

30880780 is an abundant number, since it is smaller than the sum of its proper divisors (44558948).

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

30880780 is a wasteful number, since it uses less digits than its factorization.

30880780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31534 (or 31525 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 30880780 is about 5557.0477773724. The cubic root of 30880780 is about 313.7348431592.

The spelling of 30880780 in words is "thirty million, eight hundred eighty thousand, seven hundred eighty".