18473336 has 32 divisors (see below), whose sum is σ = 39968640. Its totient is φ = 7840608.

The previous prime is 18473327. The next prime is 18473341. The reversal of 18473336 is 63337481.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18473296 and 18473305.

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, 4451 + ... + 7533.

It is an arithmetic number, because the mean of its divisors is an integer number (1249020).

Almost surely, 2^18473336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18473336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19984320).

18473336 is an abundant number, since it is smaller than the sum of its proper divisors (21495304).

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

18473336 is a wasteful number, since it uses less digits than its factorization.

18473336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203 (or 3199 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 18473336 is about 4298.0618888052. The cubic root of 18473336 is about 264.3514984316.

The spelling of 18473336 in words is "eighteen million, four hundred seventy-three thousand, three hundred thirty-six".