20498794276 has 27 divisors (see below), whose sum is σ = 38116239217. Its totient is φ = 9644200640.

The previous prime is 20498794247. The next prime is 20498794289. The reversal of 20498794276 is 67249789402.

The square root of 20498794276 is 143174.

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

It can be written as a sum of positive squares in only one way, i.e., 15959268900 + 4539525376 = 126330^2 + 67376^2 .

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 20498794276.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4865811 + ... + 4870021.

Almost surely, 2^20498794276 is an apocalyptic number.

20498794276 is the 143174-th square number.

It is an amenable number.

20498794276 is a deficient number, since it is larger than the sum of its proper divisors (17617444941).

20498794276 is an frugal number, since it uses more digits than its factorization.

20498794276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 20498794276 in words is "twenty billion, four hundred ninety-eight million, seven hundred ninety-four thousand, two hundred seventy-six".