18479800 has 24 divisors (see below), whose sum is σ = 42966000. Its totient is φ = 7391840.

The previous prime is 18479753. The next prime is 18479819. The reversal of 18479800 is 897481.

It is a self number, because there is not a number n which added to its sum of digits gives 18479800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46000 + ... + 46399.

It is an arithmetic number, because the mean of its divisors is an integer number (1790250).

Almost surely, 2^18479800 is an apocalyptic number.

18479800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18479800 is an abundant number, since it is smaller than the sum of its proper divisors (24486200).

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

18479800 is a wasteful number, since it uses less digits than its factorization.

18479800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92415 (or 92406 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18479800 is about 4298.8137898727. The cubic root of 18479800 is about 264.3823278898.

The spelling of 18479800 in words is "eighteen million, four hundred seventy-nine thousand, eight hundred".