20200320 has 256 divisors, whose sum is σ = 82252800. Its totient is φ = 4589568.

The previous prime is 20200309. The next prime is 20200337. The reversal of 20200320 is 2300202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120877 + ... + 121043.

It is an arithmetic number, because the mean of its divisors is an integer number (321300).

Almost surely, 2^20200320 is an apocalyptic number.

20200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

20200320 is an abundant number, since it is smaller than the sum of its proper divisors (62052480).

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

20200320 is a wasteful number, since it uses less digits than its factorization.

20200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20200320 is about 4494.4766102406. The cubic root of 20200320 is about 272.3450062671.

Adding to 20200320 its reverse (2300202), we get a palindrome (22500522).

The spelling of 20200320 in words is "twenty million, two hundred thousand, three hundred twenty".