2271265780 has 48 divisors (see below), whose sum is σ = 5505042816. Its totient is φ = 771004800.

The previous prime is 2271265751. The next prime is 2271265783. The reversal of 2271265780 is 875621722.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271265783) 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, 66174 + ... + 94453.

It is an arithmetic number, because the mean of its divisors is an integer number (114688392).

Almost surely, 2^2271265780 is an apocalyptic number.

2271265780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2271265780 is an abundant number, since it is smaller than the sum of its proper divisors (3233777036).

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

2271265780 is a wasteful number, since it uses less digits than its factorization.

2271265780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160744 (or 160742 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 2271265780 is about 47657.7987322117. The cubic root of 2271265780 is about 1314.4860632439.

The spelling of 2271265780 in words is "two billion, two hundred seventy-one million, two hundred sixty-five thousand, seven hundred eighty".