18872382 has 16 divisors (see below), whose sum is σ = 38665872. Its totient is φ = 6137280.

The previous prime is 18872317. The next prime is 18872407. The reversal of 18872382 is 28327881.

It is a self number, because there is not a number n which added to its sum of digits gives 18872382.

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, 38113 + ... + 38604.

It is an arithmetic number, because the mean of its divisors is an integer number (2416617).

Almost surely, 2^18872382 is an apocalyptic number.

18872382 is an abundant number, since it is smaller than the sum of its proper divisors (19793490).

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

18872382 is a wasteful number, since it uses less digits than its factorization.

18872382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76763.

The product of its digits is 43008, while the sum is 39.

The square root of 18872382 is about 4344.2354908545. The cubic root of 18872382 is about 266.2413905391.

It can be divided in two parts, 188723 and 82, that added together give a triangular number (188805 = T₆₁₄).

The spelling of 18872382 in words is "eighteen million, eight hundred seventy-two thousand, three hundred eighty-two".