18053632 has 40 divisors (see below), whose sum is σ = 37085796. Its totient is φ = 8773632.

The previous prime is 18053627. The next prime is 18053639. The reversal of 18053632 is 23635081.

It can be written as a sum of positive squares in 2 ways, for example, as 17438976 + 614656 = 4176^2 + 784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18053632.

It is not an unprimeable number, because it can be changed into a prime (18053639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18468 + ... + 19420.

Almost surely, 2^18053632 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 18053632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18542898).

18053632 is an abundant number, since it is smaller than the sum of its proper divisors (19032164).

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

18053632 is an frugal number, since it uses more digits than its factorization.

18053632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 18053632 is about 4248.9565777965. The cubic root of 18053632 is about 262.3341694863.

The spelling of 18053632 in words is "eighteen million, fifty-three thousand, six hundred thirty-two".