20200356 has 72 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 5906880.

The previous prime is 20200343. The next prime is 20200387. The reversal of 20200356 is 65300202.

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 23 ways as a sum of consecutive naturals, for example, 10605 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (800800).

Almost surely, 2^20200356 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 20200356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828800).

20200356 is an abundant number, since it is smaller than the sum of its proper divisors (37457244).

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

20200356 is a wasteful number, since it uses less digits than its factorization.

20200356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20200356 is about 4494.4806151545. The cubic root of 20200356 is about 272.3451680536.

Adding to 20200356 its reverse (65300202), we get a palindrome (85500558).

The spelling of 20200356 in words is "twenty million, two hundred thousand, three hundred fifty-six".