18839568 has 80 divisors (see below), whose sum is σ = 54853632. Its totient is φ = 5520000.

The previous prime is 18839567. The next prime is 18839573. The reversal of 18839568 is 86593881.

18839568 = T₁₄₇ + T₁₄₈ + ... + T₄₈₇.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18839567) 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 15 ways as a sum of consecutive naturals, for example, 15793 + ... + 16943.

Almost surely, 2^18839568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18839568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27426816).

18839568 is an abundant number, since it is smaller than the sum of its proper divisors (36014064).

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

18839568 is a wasteful number, since it uses less digits than its factorization.

18839568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 18839568 is about 4340.4571187837. The cubic root of 18839568 is about 266.0869936126.

The spelling of 18839568 in words is "eighteen million, eight hundred thirty-nine thousand, five hundred sixty-eight".