18642912 has 24 divisors (see below), whose sum is σ = 48937896. Its totient is φ = 6214272.

The previous prime is 18642893. The next prime is 18642941. The reversal of 18642912 is 21924681.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97003 + ... + 97194.

It is an arithmetic number, because the mean of its divisors is an integer number (2039079).

Almost surely, 2^18642912 is an apocalyptic number.

18642912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18642912 is an abundant number, since it is smaller than the sum of its proper divisors (30294984).

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

18642912 is a wasteful number, since it uses less digits than its factorization.

18642912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194210 (or 194202 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 18642912 is about 4317.7438553022. The cubic root of 18642912 is about 265.1579075491.

The spelling of 18642912 in words is "eighteen million, six hundred forty-two thousand, nine hundred twelve".