20274447140 has 12 divisors (see below), whose sum is σ = 42576339036. Its totient is φ = 8109778848.

The previous prime is 20274447139. The next prime is 20274447229. The reversal of 20274447140 is 4174447202.

It can be written as a sum of positive squares in 2 ways, for example, as 15849802816 + 4424644324 = 125896^2 + 66518^2 .

It is a super-2 number, since 2×20274447140² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20274447140.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506861159 + ... + 506861198.

It is an arithmetic number, because the mean of its divisors is an integer number (3548028253).

Almost surely, 2^20274447140 is an apocalyptic number.

20274447140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20274447140 is an abundant number, since it is smaller than the sum of its proper divisors (22301891896).

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

20274447140 is a wasteful number, since it uses less digits than its factorization.

20274447140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013722366 (or 1013722364 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 35.

The spelling of 20274447140 in words is "twenty billion, two hundred seventy-four million, four hundred forty-seven thousand, one hundred forty".