18223756 has 12 divisors (see below), whose sum is σ = 31925320. Its totient is φ = 9102240.

The previous prime is 18223703. The next prime is 18223757. The reversal of 18223756 is 65732281.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18223757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400 + ... + 6928.

Almost surely, 2^18223756 is an apocalyptic number.

It is an amenable number.

18223756 is a deficient number, since it is larger than the sum of its proper divisors (13701564).

18223756 is a wasteful number, since it uses less digits than its factorization.

18223756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824 (or 4822 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 18223756 is about 4268.9291397258. The cubic root of 18223756 is about 263.1556086847.

The spelling of 18223756 in words is "eighteen million, two hundred twenty-three thousand, seven hundred fifty-six".