30940400 has 30 divisors (see below), whose sum is σ = 74335272. Its totient is φ = 12376000.

The previous prime is 30940397. The next prime is 30940411. The reversal of 30940400 is 404903.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38276 + ... + 39075.

Almost surely, 2^30940400 is an apocalyptic number.

It is an amenable number.

30940400 is an abundant number, since it is smaller than the sum of its proper divisors (43394872).

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

30940400 is a wasteful number, since it uses less digits than its factorization.

30940400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77369 (or 77358 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30940400 is about 5562.4095498264. The cubic root of 30940400 is about 313.9366174960.

The spelling of 30940400 in words is "thirty million, nine hundred forty thousand, four hundred".