20122320 has 40 divisors (see below), whose sum is σ = 62379936. Its totient is φ = 5365888.

The previous prime is 20122241. The next prime is 20122343. The reversal of 20122320 is 2322102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20122296 and 20122305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41682 + ... + 42161.

Almost surely, 2^20122320 is an apocalyptic number.

20122320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122320 is an abundant number, since it is smaller than the sum of its proper divisors (42257616).

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

20122320 is a wasteful number, since it uses less digits than its factorization.

20122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83859 (or 83853 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20122320 is about 4485.7909001647. The cubic root of 20122320 is about 271.9940165927.

Adding to 20122320 its reverse (2322102), we get a palindrome (22444422).

The spelling of 20122320 in words is "twenty million, one hundred twenty-two thousand, three hundred twenty".