30940190 has 24 divisors (see below), whose sum is σ = 56884680. Its totient is φ = 12113184.

The previous prime is 30940163. The next prime is 30940211. The reversal of 30940190 is 9104903.

It is a happy number.

It is a super-2 number, since 2×30940190² = 1914590714472200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134996 + ... + 135224.

It is an arithmetic number, because the mean of its divisors is an integer number (2370195).

Almost surely, 2^30940190 is an apocalyptic number.

30940190 is a deficient number, since it is larger than the sum of its proper divisors (25944490).

30940190 is an equidigital number, since it uses as much as digits as its factorization.

30940190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 30940190 is about 5562.3906730829. The cubic root of 30940190 is about 313.9359072398.

The spelling of 30940190 in words is "thirty million, nine hundred forty thousand, one hundred ninety".