2271171828 has 24 divisors (see below), whose sum is σ = 5363251488. Its totient is φ = 747935776.

The previous prime is 2271171811. The next prime is 2271171857. The reversal of 2271171828 is 8281711722.

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, 1139151 + ... + 1141142.

It is an arithmetic number, because the mean of its divisors is an integer number (223468812).

Almost surely, 2^2271171828 is an apocalyptic number.

It is an amenable number.

2271171828 is an abundant number, since it is smaller than the sum of its proper divisors (3092079660).

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

2271171828 is a wasteful number, since it uses less digits than its factorization.

2271171828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280383 (or 2280381 counting only the distinct ones).

The product of its digits is 25088, while the sum is 39.

The square root of 2271171828 is about 47656.8130281495. The cubic root of 2271171828 is about 1314.4679382115.

The spelling of 2271171828 in words is "two billion, two hundred seventy-one million, one hundred seventy-one thousand, eight hundred twenty-eight".