18836480 has 88 divisors (see below), whose sum is σ = 48833232. Its totient is φ = 6930432.

The previous prime is 18836479. The next prime is 18836483. The reversal of 18836480 is 8463881.

It is not an unprimeable number, because it can be changed into a prime (18836483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66419 + ... + 66701.

Almost surely, 2^18836480 is an apocalyptic number.

18836480 is a gapful number since it is divisible by the number (10) 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 18836480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24416616).

18836480 is an abundant number, since it is smaller than the sum of its proper divisors (29996752).

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

18836480 is a wasteful number, since it uses less digits than its factorization.

18836480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 18836480 is about 4340.1013813044. The cubic root of 18836480 is about 266.0724546817.

The spelling of 18836480 in words is "eighteen million, eight hundred thirty-six thousand, four hundred eighty".