18673242 has 32 divisors (see below), whose sum is σ = 45194112. Its totient is φ = 5021184.

The previous prime is 18673231. The next prime is 18673243. The reversal of 18673242 is 24237681.

It is not an unprimeable number, because it can be changed into a prime (18673243) 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, 12363 + ... + 13790.

It is an arithmetic number, because the mean of its divisors is an integer number (1412316).

Almost surely, 2^18673242 is an apocalyptic number.

18673242 is an abundant number, since it is smaller than the sum of its proper divisors (26520870).

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

18673242 is a wasteful number, since it uses less digits than its factorization.

18673242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26182.

The product of its digits is 16128, while the sum is 33.

The square root of 18673242 is about 4321.2546789098. The cubic root of 18673242 is about 265.3016240455.

It can be divided in two parts, 18673 and 242, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18673242 in words is "eighteen million, six hundred seventy-three thousand, two hundred forty-two".