20470453444 has 36 divisors (see below), whose sum is σ = 42355166700. Its totient is φ = 8629225920.

The previous prime is 20470453441. The next prime is 20470453477. The reversal of 20470453444 is 44435407402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 901800900 + 19568652544 = 30030^2 + 139888^2 .

It is a super-2 number, since 2×20470453444² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20470453441) 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, 844119 + ... + 868030.

Almost surely, 2^20470453444 is an apocalyptic number.

It is an amenable number.

20470453444 is an abundant number, since it is smaller than the sum of its proper divisors (21884713256).

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

20470453444 is a wasteful number, since it uses less digits than its factorization.

20470453444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712228 (or 1712219 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 37.

The spelling of 20470453444 in words is "twenty billion, four hundred seventy million, four hundred fifty-three thousand, four hundred forty-four".