18087536 has 10 divisors (see below), whose sum is σ = 35044632. Its totient is φ = 9043760.

The previous prime is 18087533. The next prime is 18087547. The reversal of 18087536 is 63578081.

It is a self number, because there is not a number n which added to its sum of digits gives 18087536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18087533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565220 + ... + 565251.

Almost surely, 2^18087536 is an apocalyptic number.

18087536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18087536 is a deficient number, since it is larger than the sum of its proper divisors (16957096).

18087536 is a wasteful number, since it uses less digits than its factorization.

18087536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130479 (or 1130473 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18087536 is about 4252.9443918302. The cubic root of 18087536 is about 262.4982844937.

The spelling of 18087536 in words is "eighteen million, eighty-seven thousand, five hundred thirty-six".