18534944 has 24 divisors (see below), whose sum is σ = 37750860. Its totient is φ = 8947456.

The previous prime is 18534889. The next prime is 18534959. The reversal of 18534944 is 44943581.

It can be written as a sum of positive squares in 2 ways, for example, as 18490000 + 44944 = 4300^2 + 212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18534898 and 18534907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9059 + ... + 10914.

Almost surely, 2^18534944 is an apocalyptic number.

It is an amenable number.

18534944 is an abundant number, since it is smaller than the sum of its proper divisors (19215916).

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

18534944 is a wasteful number, since it uses less digits than its factorization.

18534944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20012 (or 20004 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 18534944 is about 4305.2228746024. Note that the first 3 decimals coincide. The cubic root of 18534944 is about 264.6450403590.

The spelling of 18534944 in words is "eighteen million, five hundred thirty-four thousand, nine hundred forty-four".