18874772 has 12 divisors (see below), whose sum is σ = 37749600. Its totient is φ = 8089176.

The previous prime is 18874769. The next prime is 18874787. The reversal of 18874772 is 27747881.

18874772 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337022 + ... + 337077.

It is an arithmetic number, because the mean of its divisors is an integer number (3145800).

Almost surely, 2^18874772 is an apocalyptic number.

It is an amenable number.

18874772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18874772 is a wasteful number, since it uses less digits than its factorization.

18874772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674110 (or 674108 counting only the distinct ones).

The product of its digits is 175616, while the sum is 44.

The square root of 18874772 is about 4344.5105593151. The cubic root of 18874772 is about 266.2526290086.

The spelling of 18874772 in words is "eighteen million, eight hundred seventy-four thousand, seven hundred seventy-two".