18432252 has 24 divisors (see below), whose sum is σ = 47787600. Its totient is φ = 6144048.

The previous prime is 18432241. The next prime is 18432277. The reversal of 18432252 is 25223481.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85227 + ... + 85442.

It is an arithmetic number, because the mean of its divisors is an integer number (1991150).

Almost surely, 2^18432252 is an apocalyptic number.

18432252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18432252 is an abundant number, since it is smaller than the sum of its proper divisors (29355348).

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

18432252 is a wasteful number, since it uses less digits than its factorization.

18432252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170682 (or 170674 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 18432252 is about 4293.2798650915. The cubic root of 18432252 is about 264.1553837337.

It can be divided in two parts, 1843 and 2252, that added together give a triangular number (4095 = T₉₀).

The spelling of 18432252 in words is "eighteen million, four hundred thirty-two thousand, two hundred fifty-two".