18095720 has 16 divisors (see below), whose sum is σ = 40715460. Its totient is φ = 7238272.

The previous prime is 18095717. The next prime is 18095729. The reversal of 18095720 is 2759081.

It can be written as a sum of positive squares in 2 ways, for example, as 16924996 + 1170724 = 4114^2 + 1082^2 .

It is not an unprimeable number, because it can be changed into a prime (18095729) 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, 226157 + ... + 226236.

Almost surely, 2^18095720 is an apocalyptic number.

18095720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18095720 is an abundant number, since it is smaller than the sum of its proper divisors (22619740).

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

18095720 is a wasteful number, since it uses less digits than its factorization.

18095720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452404 (or 452400 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 18095720 is about 4253.9064399679. The cubic root of 18095720 is about 262.5378690642.

The spelling of 18095720 in words is "eighteen million, ninety-five thousand, seven hundred twenty".