20682260280 has 128 divisors (see below), whose sum is σ = 75208262400. Its totient is φ = 5013878400.

The previous prime is 20682260279. The next prime is 20682260303. The reversal of 20682260280 is 8206228602.

20682260280 is a `hidden beast` number, since 20 + 6 + 8 + 22 + 602 + 8 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 858586 + ... + 882345.

It is an arithmetic number, because the mean of its divisors is an integer number (587564550).

Almost surely, 2^20682260280 is an apocalyptic number.

20682260280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20682260280 is an abundant number, since it is smaller than the sum of its proper divisors (54526002120).

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

20682260280 is a wasteful number, since it uses less digits than its factorization.

20682260280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740962 (or 1740952 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

Adding to 20682260280 its reverse (8206228602), we get a palindrome (28888488882).

The spelling of 20682260280 in words is "twenty billion, six hundred eighty-two million, two hundred sixty thousand, two hundred eighty".