18532144 has 20 divisors (see below), whose sum is σ = 37796440. Its totient is φ = 8778240.

The previous prime is 18532103. The next prime is 18532211. The reversal of 18532144 is 44123581.

It is a super-2 number, since 2×18532144² = 686880722473472, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 30177 + ... + 30784.

It is an arithmetic number, because the mean of its divisors is an integer number (1889822).

Almost surely, 2^18532144 is an apocalyptic number.

It is an amenable number.

18532144 is an abundant number, since it is smaller than the sum of its proper divisors (19264296).

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

18532144 is a wasteful number, since it uses less digits than its factorization.

18532144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60988 (or 60982 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 18532144 is about 4304.8976759036. The cubic root of 18532144 is about 264.6317133979.

The spelling of 18532144 in words is "eighteen million, five hundred thirty-two thousand, one hundred forty-four".