18323532 has 18 divisors (see below), whose sum is σ = 46317908. Its totient is φ = 6107832.

The previous prime is 18323527. The next prime is 18323533. The reversal of 18323532 is 23532381.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 18323496 and 18323505.

It is not an unprimeable number, because it can be changed into a prime (18323533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254458 + ... + 254529.

Almost surely, 2^18323532 is an apocalyptic number.

18323532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18323532 is an abundant number, since it is smaller than the sum of its proper divisors (27994376).

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

18323532 is a wasteful number, since it uses less digits than its factorization.

18323532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508997 (or 508992 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 18323532 is about 4280.5994907256. The cubic root of 18323532 is about 263.6349983427.

The spelling of 18323532 in words is "eighteen million, three hundred twenty-three thousand, five hundred thirty-two".