22402020 has 48 divisors (see below), whose sum is σ = 64427328. Its totient is φ = 5811840.

The previous prime is 22402013. The next prime is 22402049. The reversal of 22402020 is 2020422.

It is a happy number.

It is a super-3 number, since 3×22402020³ (a number of 23 digits) contains 333 as substring.

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 = 22401987 and 22402005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2826 + ... + 7265.

It is an arithmetic number, because the mean of its divisors is an integer number (1342236).

Almost surely, 2^22402020 is an apocalyptic number.

22402020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22402020 is an abundant number, since it is smaller than the sum of its proper divisors (42025308).

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

22402020 is a wasteful number, since it uses less digits than its factorization.

22402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140 (or 10138 counting only the distinct ones).

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

The square root of 22402020 is about 4733.0772231182. The cubic root of 22402020 is about 281.9004225657.

Adding to 22402020 its reverse (2020422), we get a palindrome (24422442).

The spelling of 22402020 in words is "twenty-two million, four hundred two thousand, twenty".