18228476 has 12 divisors (see below), whose sum is σ = 36457008. Its totient is φ = 7812192.

The previous prime is 18228461. The next prime is 18228487. The reversal of 18228476 is 67482281.

18228476 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325481 + ... + 325536.

It is an arithmetic number, because the mean of its divisors is an integer number (3038084).

Almost surely, 2^18228476 is an apocalyptic number.

It is an amenable number.

18228476 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18228476 is a wasteful number, since it uses less digits than its factorization.

18228476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651028 (or 651026 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 18228476 is about 4269.4819357857. The cubic root of 18228476 is about 263.1783260516.

The spelling of 18228476 in words is "eighteen million, two hundred twenty-eight thousand, four hundred seventy-six".