18424998 has 24 divisors (see below), whose sum is σ = 40072968. Its totient is φ = 6118272.

The previous prime is 18424969. The next prime is 18424999. The reversal of 18424998 is 89942481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18424999) 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, 3286 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (1669707).

Almost surely, 2^18424998 is an apocalyptic number.

18424998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18424998 is an abundant number, since it is smaller than the sum of its proper divisors (21647970).

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

18424998 is a wasteful number, since it uses less digits than its factorization.

18424998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908 (or 3905 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18424998 is about 4292.4349732990. The cubic root of 18424998 is about 264.1207264641.

The spelling of 18424998 in words is "eighteen million, four hundred twenty-four thousand, nine hundred ninety-eight".