18406968 has 16 divisors (see below), whose sum is σ = 46017480. Its totient is φ = 6135648.

The previous prime is 18406951. The next prime is 18406979. The reversal of 18406968 is 86960481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383455 + ... + 383502.

Almost surely, 2^18406968 is an apocalyptic number.

It is an amenable number.

18406968 is an abundant number, since it is smaller than the sum of its proper divisors (27610512).

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

18406968 is a wasteful number, since it uses less digits than its factorization.

18406968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766966 (or 766962 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 18406968 is about 4290.3342527127. The cubic root of 18406968 is about 264.0345455253.

The spelling of 18406968 in words is "eighteen million, four hundred six thousand, nine hundred sixty-eight".