18228552 has 16 divisors (see below), whose sum is σ = 45571440. Its totient is φ = 6076176.

The previous prime is 18228541. The next prime is 18228557. The reversal of 18228552 is 25582281.

It is not an unprimeable number, because it can be changed into a prime (18228557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379738 + ... + 379785.

It is an arithmetic number, because the mean of its divisors is an integer number (2848215).

Almost surely, 2^18228552 is an apocalyptic number.

18228552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18228552 is an abundant number, since it is smaller than the sum of its proper divisors (27342888).

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

18228552 is a wasteful number, since it uses less digits than its factorization.

18228552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759532 (or 759528 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 18228552 is about 4269.4908361537. The cubic root of 18228552 is about 263.1786918076.

The spelling of 18228552 in words is "eighteen million, two hundred twenty-eight thousand, five hundred fifty-two".