18424196 has 72 divisors (see below), whose sum is σ = 40372416. Its totient is φ = 7318080.

The previous prime is 18424181. The next prime is 18424201. The reversal of 18424196 is 69142481.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274955 + ... + 275021.

It is an arithmetic number, because the mean of its divisors is an integer number (560728).

Almost surely, 2^18424196 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 18424196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20186208).

18424196 is an abundant number, since it is smaller than the sum of its proper divisors (21948220).

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

18424196 is a wasteful number, since it uses less digits than its factorization.

18424196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 160 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 18424196 is about 4292.3415521135. The cubic root of 18424196 is about 264.1168942087.

The spelling of 18424196 in words is "eighteen million, four hundred twenty-four thousand, one hundred ninety-six".