18298940 has 24 divisors (see below), whose sum is σ = 41921712. Its totient is φ = 6654080.

The previous prime is 18298937. The next prime is 18298981. The reversal of 18298940 is 4989281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41369 + ... + 41808.

It is an arithmetic number, because the mean of its divisors is an integer number (1746738).

Almost surely, 2^18298940 is an apocalyptic number.

18298940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18298940 is an abundant number, since it is smaller than the sum of its proper divisors (23622772).

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

18298940 is a wasteful number, since it uses less digits than its factorization.

18298940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83197 (or 83195 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 18298940 is about 4277.7260314331. The cubic root of 18298940 is about 263.5170040888.

The spelling of 18298940 in words is "eighteen million, two hundred ninety-eight thousand, nine hundred forty".