20310998 has 8 divisors (see below), whose sum is σ = 30593640. Its totient is φ = 10113120.

The previous prime is 20310973. The next prime is 20311043. The reversal of 20310998 is 89901302.

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, 20588 + ... + 21551.

It is an arithmetic number, because the mean of its divisors is an integer number (3824205).

Almost surely, 2^20310998 is an apocalyptic number.

20310998 is a deficient number, since it is larger than the sum of its proper divisors (10282642).

20310998 is a wasteful number, since it uses less digits than its factorization.

20310998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42382.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 20310998 is about 4506.7724593105. The cubic root of 20310998 is about 272.8414953806.

The spelling of 20310998 in words is "twenty million, three hundred ten thousand, nine hundred ninety-eight".