20220420 has 48 divisors (see below), whose sum is σ = 61766208. Its totient is φ = 4901760.

The previous prime is 20220407. The next prime is 20220451. The reversal of 20220420 is 2402202.

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 = 20220396 and 20220405.

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, 14659 + ... + 15978.

It is an arithmetic number, because the mean of its divisors is an integer number (1286796).

Almost surely, 2^20220420 is an apocalyptic number.

20220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220420 is an abundant number, since it is smaller than the sum of its proper divisors (41545788).

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

20220420 is a wasteful number, since it uses less digits than its factorization.

20220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30660 (or 30658 counting only the distinct ones).

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

The square root of 20220420 is about 4496.7121322139. The cubic root of 20220420 is about 272.4353071465.

Adding to 20220420 its reverse (2402202), we get a palindrome (22622622).

The spelling of 20220420 in words is "twenty million, two hundred twenty thousand, four hundred twenty".