20464722 has 24 divisors (see below), whose sum is σ = 44423964. Its totient is φ = 6808704.

The previous prime is 20464711. The next prime is 20464723. The reversal of 20464722 is 22746402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20439441 + 25281 = 4521^2 + 159^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16558 + ... + 17750.

Almost surely, 2^20464722 is an apocalyptic number.

20464722 is an abundant number, since it is smaller than the sum of its proper divisors (23959242).

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

20464722 is a wasteful number, since it uses less digits than its factorization.

20464722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20464722 is about 4523.7950881975. The cubic root of 20464722 is about 273.5281006568.

The spelling of 20464722 in words is "twenty million, four hundred sixty-four thousand, seven hundred twenty-two".