18245772 has 36 divisors (see below), whose sum is σ = 46280416. Its totient is φ = 6060960.

The previous prime is 18245767. The next prime is 18245789. The reversal of 18245772 is 27754281.

18245772 is a `hidden beast` number, since 1 + 82 + 4 + 577 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12522 + ... + 13902.

Almost surely, 2^18245772 is an apocalyptic number.

18245772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18245772 is an abundant number, since it is smaller than the sum of its proper divisors (28034644).

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

18245772 is a wasteful number, since it uses less digits than its factorization.

18245772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758 (or 1753 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 18245772 is about 4271.5069940245. The cubic root of 18245772 is about 263.2615382264.

It can be divided in two parts, 182 and 45772, that added together give a palindrome (45954).

The spelling of 18245772 in words is "eighteen million, two hundred forty-five thousand, seven hundred seventy-two".