18398064 has 40 divisors (see below), whose sum is σ = 49170960. Its totient is φ = 5920768.

The previous prime is 18398021. The next prime is 18398069. The reversal of 18398064 is 46089381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18398069) 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, 5217 + ... + 8000.

It is an arithmetic number, because the mean of its divisors is an integer number (1229274).

Almost surely, 2^18398064 is an apocalyptic number.

It is an amenable number.

18398064 is an abundant number, since it is smaller than the sum of its proper divisors (30772896).

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

18398064 is a wasteful number, since it uses less digits than its factorization.

18398064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13257 (or 13251 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18398064 is about 4289.2964458055. The cubic root of 18398064 is about 263.9919648610.

The spelling of 18398064 in words is "eighteen million, three hundred ninety-eight thousand, sixty-four".