30923980 has 12 divisors (see below), whose sum is σ = 64940400. Its totient is φ = 12369584.

The previous prime is 30923941. The next prime is 30923987. The reversal of 30923980 is 8932903.

It is not an unprimeable number, because it can be changed into a prime (30923987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773080 + ... + 773119.

It is an arithmetic number, because the mean of its divisors is an integer number (5411700).

Almost surely, 2^30923980 is an apocalyptic number.

It is an amenable number.

30923980 is an abundant number, since it is smaller than the sum of its proper divisors (34016420).

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

30923980 is a wasteful number, since it uses less digits than its factorization.

30923980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546208 (or 1546206 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 30923980 is about 5560.9333748931. The cubic root of 30923980 is about 313.8810725191.

The spelling of 30923980 in words is "thirty million, nine hundred twenty-three thousand, nine hundred eighty".