18397068 has 24 divisors (see below), whose sum is σ = 43017072. Its totient is φ = 6119424.

The previous prime is 18397063. The next prime is 18397081. The reversal of 18397068 is 86079381.

It is a super-2 number, since 2×18397068² = 676904221993248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18397063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5596 + ... + 8252.

It is an arithmetic number, because the mean of its divisors is an integer number (1792378).

Almost surely, 2^18397068 is an apocalyptic number.

It is an amenable number.

18397068 is an abundant number, since it is smaller than the sum of its proper divisors (24620004).

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

18397068 is a wasteful number, since it uses less digits than its factorization.

18397068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 18397068 is about 4289.1803412773. The cubic root of 18397068 is about 263.9872009406.

The spelling of 18397068 in words is "eighteen million, three hundred ninety-seven thousand, sixty-eight".