18265632 has 144 divisors (see below), whose sum is σ = 61018272. Its totient is φ = 4730880.

The previous prime is 18265619. The next prime is 18265661. The reversal of 18265632 is 23656281.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 18265593 and 18265602.

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, 51568 + ... + 51920.

It is an arithmetic number, because the mean of its divisors is an integer number (423738).

Almost surely, 2^18265632 is an apocalyptic number.

18265632 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 18265632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30509136).

18265632 is an abundant number, since it is smaller than the sum of its proper divisors (42752640).

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

18265632 is a wasteful number, since it uses less digits than its factorization.

18265632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 376 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 18265632 is about 4273.8310682571. The cubic root of 18265632 is about 263.3570211382.

The spelling of 18265632 in words is "eighteen million, two hundred sixty-five thousand, six hundred thirty-two".