18460224 has 84 divisors (see below), whose sum is σ = 54918864. Its totient is φ = 6148224.

The previous prime is 18460223. The next prime is 18460231. The reversal of 18460224 is 42206481.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18460223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14959 + ... + 16145.

It is an arithmetic number, because the mean of its divisors is an integer number (653796).

Almost surely, 2^18460224 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 18460224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27459432).

18460224 is an abundant number, since it is smaller than the sum of its proper divisors (36458640).

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

18460224 is an equidigital number, since it uses as much as digits as its factorization.

18460224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 18460224 is about 4296.5362793767. The cubic root of 18460224 is about 264.2889398472.

The spelling of 18460224 in words is "eighteen million, four hundred sixty thousand, two hundred twenty-four".