20793220 has 48 divisors (see below), whose sum is σ = 52536960. Its totient is φ = 6753024.

The previous prime is 20793187. The next prime is 20793221. The reversal of 20793220 is 2239702.

It is not an unprimeable number, because it can be changed into a prime (20793221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1249 + ... + 6568.

It is an arithmetic number, because the mean of its divisors is an integer number (1094520).

Almost surely, 2^20793220 is an apocalyptic number.

20793220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20793220 is an abundant number, since it is smaller than the sum of its proper divisors (31743740).

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

20793220 is a wasteful number, since it uses less digits than its factorization.

20793220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852 (or 7850 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20793220 is about 4559.9583331430. The cubic root of 20793220 is about 274.9838888633.

The spelling of 20793220 in words is "twenty million, seven hundred ninety-three thousand, two hundred twenty".