18283772 has 72 divisors (see below), whose sum is σ = 38552976. Its totient is φ = 7547904.

The previous prime is 18283763. The next prime is 18283787. The reversal of 18283772 is 27738281.

Its product of digits (37632) is a multiple of the sum of its prime divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425183 + ... + 425225.

It is an arithmetic number, because the mean of its divisors is an integer number (535458).

Almost surely, 2^18283772 is an apocalyptic number.

It is an amenable number.

18283772 is an abundant number, since it is smaller than the sum of its proper divisors (20269204).

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

18283772 is a wasteful number, since it uses less digits than its factorization.

18283772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 112 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 18283772 is about 4275.9527593274. The cubic root of 18283772 is about 263.4441741725. Note that the first 3 decimals are identical.

The spelling of 18283772 in words is "eighteen million, two hundred eighty-three thousand, seven hundred seventy-two".