20257323276 has 48 divisors (see below), whose sum is σ = 47473848576. Its totient is φ = 6722958144.

The previous prime is 20257323269. The next prime is 20257323277. The reversal of 20257323276 is 67232375202.

It is a happy number.

It is a super-3 number, since 3×20257323276³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20257323277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3675715 + ... + 3681221.

It is an arithmetic number, because the mean of its divisors is an integer number (989038512).

Almost surely, 2^20257323276 is an apocalyptic number.

It is an amenable number.

20257323276 is an abundant number, since it is smaller than the sum of its proper divisors (27216525300).

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

20257323276 is a wasteful number, since it uses less digits than its factorization.

20257323276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798 (or 6796 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 39.

Adding to 20257323276 its reverse (67232375202), we get a palindrome (87489698478).

The spelling of 20257323276 in words is "twenty billion, two hundred fifty-seven million, three hundred twenty-three thousand, two hundred seventy-six".