18474870 has 16 divisors (see below), whose sum is σ = 44339760. Its totient is φ = 4926624.

The previous prime is 18474823. The next prime is 18474889. The reversal of 18474870 is 7847481.

18474870 is nontrivially palindromic in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307885 + ... + 307944.

It is an arithmetic number, because the mean of its divisors is an integer number (2771235).

Almost surely, 2^18474870 is an apocalyptic number.

18474870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18474870 is an abundant number, since it is smaller than the sum of its proper divisors (25864890).

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

18474870 is a wasteful number, since it uses less digits than its factorization.

18474870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615839.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 18474870 is about 4298.2403376266. The cubic root of 18474870 is about 264.3588153554.

The spelling of 18474870 in words is "eighteen million, four hundred seventy-four thousand, eight hundred seventy".