18408070 has 16 divisors (see below), whose sum is σ = 33197040. Its totient is φ = 7349344.

The previous prime is 18408053. The next prime is 18408077. The reversal of 18408070 is 7080481.

It is a super-2 number, since 2×18408070² = 677714082249800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18408077) 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, 5121 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (2074815).

Almost surely, 2^18408070 is an apocalyptic number.

18408070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18408070 is a deficient number, since it is larger than the sum of its proper divisors (14788970).

18408070 is a wasteful number, since it uses less digits than its factorization.

18408070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 18408070 is about 4290.4626790126. The cubic root of 18408070 is about 264.0398145492.

The spelling of 18408070 in words is "eighteen million, four hundred eight thousand, seventy".