22042020 has 192 divisors, whose sum is σ = 83091456. Its totient is φ = 4216320.

The previous prime is 22042019. The next prime is 22042037. The reversal of 22042020 is 2024022.

It is a happy number.

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 = 22041987 and 22042005.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59877 + ... + 60243.

It is an arithmetic number, because the mean of its divisors is an integer number (432768).

Almost surely, 2^22042020 is an apocalyptic number.

22042020 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 22042020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41545728).

22042020 is an abundant number, since it is smaller than the sum of its proper divisors (61049436).

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

22042020 is a wasteful number, since it uses less digits than its factorization.

22042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22042020 is about 4694.8929700260. The cubic root of 22042020 is about 280.3822161108.

Adding to 22042020 its reverse (2024022), we get a palindrome (24066042).

It can be divided in two parts, 2204 and 2020, that added together give a palindrome (4224).

The spelling of 22042020 in words is "twenty-two million, forty-two thousand, twenty".