18827998 has 8 divisors (see below), whose sum is σ = 32276592. Its totient is φ = 8069136.

The previous prime is 18827983. The next prime is 18828001. The reversal of 18827998 is 89972881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672415 + ... + 672442.

It is an arithmetic number, because the mean of its divisors is an integer number (4034574).

Almost surely, 2^18827998 is an apocalyptic number.

18827998 is a deficient number, since it is larger than the sum of its proper divisors (13448594).

18827998 is a wasteful number, since it uses less digits than its factorization.

18827998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344866.

The product of its digits is 580608, while the sum is 52.

The square root of 18827998 is about 4339.1241051622. The cubic root of 18827998 is about 266.0325115254.

The spelling of 18827998 in words is "eighteen million, eight hundred twenty-seven thousand, nine hundred ninety-eight".