20400260262 has 16 divisors (see below), whose sum is σ = 40903297392. Its totient is φ = 6782957280.

The previous prime is 20400260227. The next prime is 20400260323. The reversal of 20400260262 is 26206200402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4279789 + ... + 4284552.

It is an arithmetic number, because the mean of its divisors is an integer number (2556456087).

Almost surely, 2^20400260262 is an apocalyptic number.

20400260262 is an abundant number, since it is smaller than the sum of its proper divisors (20503037130).

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

20400260262 is a wasteful number, since it uses less digits than its factorization.

20400260262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564743.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20400260262 its reverse (26206200402), we get a palindrome (46606460664).

The spelling of 20400260262 in words is "twenty billion, four hundred million, two hundred sixty thousand, two hundred sixty-two".