18476420 has 24 divisors (see below), whose sum is σ = 38931648. Its totient is φ = 7365600.

The previous prime is 18476413. The next prime is 18476443. The reversal of 18476420 is 2467481.

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, 5225 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (1622152).

Almost surely, 2^18476420 is an apocalyptic number.

18476420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18476420 is an abundant number, since it is smaller than the sum of its proper divisors (20455228).

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

18476420 is a wasteful number, since it uses less digits than its factorization.

18476420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 18476420 is about 4298.4206401887. The cubic root of 18476420 is about 264.3662081851.

The spelling of 18476420 in words is "eighteen million, four hundred seventy-six thousand, four hundred twenty".