18676416 has 112 divisors (see below), whose sum is σ = 55595520. Its totient is φ = 5483520.

The previous prime is 18676409. The next prime is 18676439. The reversal of 18676416 is 61467681.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78025 + ... + 78263.

Almost surely, 2^18676416 is an apocalyptic number.

18676416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18676416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27797760).

18676416 is an abundant number, since it is smaller than the sum of its proper divisors (36919104).

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

18676416 is a wasteful number, since it uses less digits than its factorization.

18676416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 292 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 18676416 is about 4321.6219177526. The cubic root of 18676416 is about 265.3166548161.

The spelling of 18676416 in words is "eighteen million, six hundred seventy-six thousand, four hundred sixteen".