20256690276 has 45 divisors (see below), whose sum is σ = 52961687779. Its totient is φ = 6751376136.

The previous prime is 20256690271. The next prime is 20256690281. The reversal of 20256690276 is 67209665202.

The square root of 20256690276 is 142326.

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

It is an interprime number because it is at equal distance from previous prime (20256690271) and next prime (20256690281).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20256690271) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2557915 + ... + 2565821.

Almost surely, 2^20256690276 is an apocalyptic number.

20256690276 is the 142326-th square number.

It is an amenable number.

20256690276 is an abundant number, since it is smaller than the sum of its proper divisors (32704997503).

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

20256690276 is an frugal number, since it uses more digits than its factorization.

20256690276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830 (or 7912 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20256690276 in words is "twenty billion, two hundred fifty-six million, six hundred ninety thousand, two hundred seventy-six".