20323008 has 112 divisors (see below), whose sum is σ = 62992000. Its totient is φ = 6407424.

The previous prime is 20322983. The next prime is 20323013. The reversal of 20323008 is 80032302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32523 + ... + 33141.

Almost surely, 2^20323008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31496000).

20323008 is an abundant number, since it is smaller than the sum of its proper divisors (42668992).

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

20323008 is a wasteful number, since it uses less digits than its factorization.

20323008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20323008 is about 4508.1047015348. The cubic root of 20323008 is about 272.8952623218.

The spelling of 20323008 in words is "twenty million, three hundred twenty-three thousand, eight".