18864552 has 32 divisors (see below), whose sum is σ = 53899200. Its totient is φ = 5389824.

The previous prime is 18864541. The next prime is 18864557. The reversal of 18864552 is 25546881.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18864552.

It is not an unprimeable number, because it can be changed into a prime (18864557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55977 + ... + 56312.

It is an arithmetic number, because the mean of its divisors is an integer number (1684350).

Almost surely, 2^18864552 is an apocalyptic number.

18864552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18864552 is an abundant number, since it is smaller than the sum of its proper divisors (35034648).

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

18864552 is a wasteful number, since it uses less digits than its factorization.

18864552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112305 (or 112301 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 18864552 is about 4343.3342031209. The cubic root of 18864552 is about 266.2045649729.

The spelling of 18864552 in words is "eighteen million, eight hundred sixty-four thousand, five hundred fifty-two".