20358912 has 108 divisors (see below), whose sum is σ = 63147336. Its totient is φ = 5806080.

The previous prime is 20358901. The next prime is 20358929. The reversal of 20358912 is 21985302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20358912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37362 + ... + 37902.

Almost surely, 2^20358912 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 20358912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31573668).

20358912 is an abundant number, since it is smaller than the sum of its proper divisors (42788424).

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

20358912 is an equidigital number, since it uses as much as digits as its factorization.

20358912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20358912 is about 4512.0851055803. The cubic root of 20358912 is about 273.0558728508.

The spelling of 20358912 in words is "twenty million, three hundred fifty-eight thousand, nine hundred twelve".