14638690 has 32 divisors (see below), whose sum is σ = 29154816. Its totient is φ = 5247360.

The previous prime is 14638661. The next prime is 14638699. The reversal of 14638690 is 9683641.

It is a super-2 number, since 2×14638690² = 428582489832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14638699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7119 + ... + 8941.

It is an arithmetic number, because the mean of its divisors is an integer number (911088).

Almost surely, 2^14638690 is an apocalyptic number.

14638690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14638690 is a deficient number, since it is larger than the sum of its proper divisors (14516126).

14638690 is a wasteful number, since it uses less digits than its factorization.

14638690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 14638690 is about 3826.0541031198. The cubic root of 14638690 is about 244.6249432854.

It can be divided in two parts, 1463 and 8690, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 14638690 in words is "fourteen million, six hundred thirty-eight thousand, six hundred ninety".