18587052 has 108 divisors (see below), whose sum is σ = 54899208. Its totient is φ = 5280000.

The previous prime is 18587039. The next prime is 18587081. The reversal of 18587052 is 25078581.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 18586998 and 18587016.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73927 + ... + 74177.

It is an arithmetic number, because the mean of its divisors is an integer number (508326).

Almost surely, 2^18587052 is an apocalyptic number.

18587052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18587052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27449604).

18587052 is an abundant number, since it is smaller than the sum of its proper divisors (36312156).

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

18587052 is a wasteful number, since it uses less digits than its factorization.

18587052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 18587052 is about 4311.2703464292. The cubic root of 18587052 is about 264.8928105709.

The spelling of 18587052 in words is "eighteen million, five hundred eighty-seven thousand, fifty-two".