20023018 has 8 divisors (see below), whose sum is σ = 31340448. Its totient is φ = 9576204.

The previous prime is 20023009. The next prime is 20023027. The reversal of 20023018 is 81032002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20023009) and next prime (20023027).

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

It is a junction number, because it is equal to n+sod(n) for n = 20022992 and 20023010.

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, 217596 + ... + 217687.

It is an arithmetic number, because the mean of its divisors is an integer number (3917556).

Almost surely, 2^20023018 is an apocalyptic number.

20023018 is a deficient number, since it is larger than the sum of its proper divisors (11317430).

20023018 is a wasteful number, since it uses less digits than its factorization.

20023018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435308.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20023018 is about 4474.7087056031. The cubic root of 20023018 is about 271.5458558435.

The spelling of 20023018 in words is "twenty million, twenty-three thousand, eighteen".