18110772 has 18 divisors (see below), whose sum is σ = 45780098. Its totient is φ = 6036912.

The previous prime is 18110759. The next prime is 18110777. The reversal of 18110772 is 27701181.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 6780816 = 3366^2 + 2604^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18110777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251503 + ... + 251574.

Almost surely, 2^18110772 is an apocalyptic number.

18110772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18110772 is an abundant number, since it is smaller than the sum of its proper divisors (27669326).

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

18110772 is a wasteful number, since it uses less digits than its factorization.

18110772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503087 (or 503082 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 18110772 is about 4255.6752695665. The cubic root of 18110772 is about 262.6106417941.

The spelling of 18110772 in words is "eighteen million, one hundred ten thousand, seven hundred seventy-two".