18471712 has 24 divisors (see below), whose sum is σ = 41561856. Its totient is φ = 7916352.

The previous prime is 18471659. The next prime is 18471727. The reversal of 18471712 is 21717481.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41008 + ... + 41455.

It is an arithmetic number, because the mean of its divisors is an integer number (1731744).

Almost surely, 2^18471712 is an apocalyptic number.

It is an amenable number.

18471712 is an abundant number, since it is smaller than the sum of its proper divisors (23090144).

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

18471712 is an equidigital number, since it uses as much as digits as its factorization.

18471712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82480 (or 82472 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 18471712 is about 4297.8729622919. The cubic root of 18471712 is about 264.3437517814.

The spelling of 18471712 in words is "eighteen million, four hundred seventy-one thousand, seven hundred twelve".