20023998 has 8 divisors (see below), whose sum is σ = 40048008. Its totient is φ = 6674664.

The previous prime is 20023987. The next prime is 20024009. The reversal of 20023998 is 89932002.

It is an interprime number because it is at equal distance from previous prime (20023987) and next prime (20024009).

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

20023998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668661 + ... + 1668672.

It is an arithmetic number, because the mean of its divisors is an integer number (5006001).

Almost surely, 2^20023998 is an apocalyptic number.

20023998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20023998 is a wasteful number, since it uses less digits than its factorization.

20023998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337338.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20023998 is about 4474.8182085980. The cubic root of 20023998 is about 271.5502859216.

The spelling of 20023998 in words is "twenty million, twenty-three thousand, nine hundred ninety-eight".