18713044 has 24 divisors (see below), whose sum is σ = 37957248. Its totient is φ = 7906080.

The previous prime is 18713027. The next prime is 18713113. The reversal of 18713044 is 44031781.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2719 + ... + 6694.

It is an arithmetic number, because the mean of its divisors is an integer number (1581552).

Almost surely, 2^18713044 is an apocalyptic number.

18713044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18713044 is an abundant number, since it is smaller than the sum of its proper divisors (19244204).

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

18713044 is a wasteful number, since it uses less digits than its factorization.

18713044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9495 (or 9493 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18713044 is about 4325.8576028344. The cubic root of 18713044 is about 265.4899870083.

It can be divided in two parts, 187 and 13044, that added together give a palindrome (13231).

The spelling of 18713044 in words is "eighteen million, seven hundred thirteen thousand, forty-four".