30399980 has 24 divisors (see below), whose sum is σ = 68751312. Its totient is φ = 11224512.

The previous prime is 30399973. The next prime is 30400003. The reversal of 30399980 is 8999303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58202 + ... + 58721.

It is an arithmetic number, because the mean of its divisors is an integer number (2864638).

Almost surely, 2^30399980 is an apocalyptic number.

It is an amenable number.

30399980 is an abundant number, since it is smaller than the sum of its proper divisors (38351332).

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

30399980 is a wasteful number, since it uses less digits than its factorization.

30399980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116945 (or 116943 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 30399980 is about 5513.6176871452. The cubic root of 30399980 is about 312.0980816990.

The spelling of 30399980 in words is "thirty million, three hundred ninety-nine thousand, nine hundred eighty".