30845940 has 48 divisors (see below), whose sum is σ = 88482240. Its totient is φ = 8024320.

The previous prime is 30845933. The next prime is 30845953. The reversal of 30845940 is 4954803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3810 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (1843380).

Almost surely, 2^30845940 is an apocalyptic number.

30845940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30845940 is an abundant number, since it is smaller than the sum of its proper divisors (57636300).

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

30845940 is a wasteful number, since it uses less digits than its factorization.

30845940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12592 (or 12590 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 30845940 is about 5553.9121347029. The cubic root of 30845940 is about 313.6168125141.

The spelling of 30845940 in words is "thirty million, eight hundred forty-five thousand, nine hundred forty".