18616632 has 64 divisors (see below), whose sum is σ = 49870080. Its totient is φ = 5770752.

The previous prime is 18616627. The next prime is 18616657. The reversal of 18616632 is 23661681.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18616593 and 18616602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41803 + ... + 42245.

It is an arithmetic number, because the mean of its divisors is an integer number (779220).

Almost surely, 2^18616632 is an apocalyptic number.

18616632 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 18616632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24935040).

18616632 is an abundant number, since it is smaller than the sum of its proper divisors (31253448).

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

18616632 is a wasteful number, since it uses less digits than its factorization.

18616632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 568 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 18616632 is about 4314.6995260389. The cubic root of 18616632 is about 265.0332555868.

The spelling of 18616632 in words is "eighteen million, six hundred sixteen thousand, six hundred thirty-two".