20222546436 has 81 divisors (see below), whose sum is σ = 51793325311. Its totient is φ = 6652965504.

The previous prime is 20222546341. The next prime is 20222546437. The reversal of 20222546436 is 63464522202.

The square root of 20222546436 is 142206.

It is a perfect power (a square), and thus also a powerful number.

20222546436 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 2 + 5 + 4 + 643 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5851332036 + 14371214400 = 76494^2 + 119880^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20222546436.

It is not an unprimeable number, because it can be changed into a prime (20222546437) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 116893246 + ... + 116893418.

Almost surely, 2^20222546436 is an apocalyptic number.

20222546436 is the 142206-th square number.

It is an amenable number.

20222546436 is an abundant number, since it is smaller than the sum of its proper divisors (31570778875).

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

20222546436 is a wasteful number, since it uses less digits than its factorization.

20222546436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Multiplying 20222546436 by its sum of digits (36), we get a square (728011671696 = 853236²).

20222546436 divided by its sum of digits (36) gives a square (561737401 = 23701²).

The spelling of 20222546436 in words is "twenty billion, two hundred twenty-two million, five hundred forty-six thousand, four hundred thirty-six".