18797298 has 32 divisors (see below), whose sum is σ = 41259456. Its totient is φ = 5673408.

The previous prime is 18797297. The next prime is 18797309. The reversal of 18797298 is 89279781.

It is a self number, because there is not a number n which added to its sum of digits gives 18797298.

It is not an unprimeable number, because it can be changed into a prime (18797293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1861 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (1289358).

Almost surely, 2^18797298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18797298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20629728).

18797298 is an abundant number, since it is smaller than the sum of its proper divisors (22462158).

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

18797298 is a wasteful number, since it uses less digits than its factorization.

18797298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618.

The product of its digits is 508032, while the sum is 51.

The square root of 18797298 is about 4335.5850816239. The cubic root of 18797298 is about 265.8878397244.

The spelling of 18797298 in words is "eighteen million, seven hundred ninety-seven thousand, two hundred ninety-eight".