14388690 has 16 divisors (see below), whose sum is σ = 34532928. Its totient is φ = 3836976.

The previous prime is 14388679. The next prime is 14388691. The reversal of 14388690 is 9688341.

It is a super-2 number, since 2×14388690² = 414068799832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14388691) 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, 239782 + ... + 239841.

It is an arithmetic number, because the mean of its divisors is an integer number (2158308).

Almost surely, 2^14388690 is an apocalyptic number.

14388690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14388690 is an abundant number, since it is smaller than the sum of its proper divisors (20144238).

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

14388690 is a wasteful number, since it uses less digits than its factorization.

14388690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479633.

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

The square root of 14388690 is about 3793.2426761282. The cubic root of 14388690 is about 243.2243689693.

The spelling of 14388690 in words is "fourteen million, three hundred eighty-eight thousand, six hundred ninety".