18887652 has 72 divisors (see below), whose sum is σ = 54966912. Its totient is φ = 5356800.

The previous prime is 18887647. The next prime is 18887677. The reversal of 18887652 is 25678881.

It is a junction number, because it is equal to n+sod(n) for n = 18887598 and 18887607.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60577 + ... + 60887.

Almost surely, 2^18887652 is an apocalyptic number.

18887652 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 18887652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27483456).

18887652 is an abundant number, since it is smaller than the sum of its proper divisors (36079260).

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

18887652 is a wasteful number, since it uses less digits than its factorization.

18887652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 18887652 is about 4345.9926369013. The cubic root of 18887652 is about 266.3131781568.

The spelling of 18887652 in words is "eighteen million, eight hundred eighty-seven thousand, six hundred fifty-two".