18535712 has 48 divisors (see below), whose sum is σ = 41626872. Its totient is φ = 8048640.

The previous prime is 18535711. The next prime is 18535721. The reversal of 18535712 is 21753581.

It can be written as a sum of positive squares in 4 ways, for example, as 17272336 + 1263376 = 4156^2 + 1124^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (18535711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5762 + ... + 8382.

Almost surely, 2^18535712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18535712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20813436).

18535712 is an abundant number, since it is smaller than the sum of its proper divisors (23091160).

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

18535712 is a wasteful number, since it uses less digits than its factorization.

18535712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661 (or 2653 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 18535712 is about 4305.3120676671. The cubic root of 18535712 is about 264.6486955194.

The spelling of 18535712 in words is "eighteen million, five hundred thirty-five thousand, seven hundred twelve".