271221828 has 12 divisors (see below), whose sum is σ = 632850960. Its totient is φ = 90407272.

The previous prime is 271221817. The next prime is 271221851. The reversal of 271221828 is 828122172.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×271221828² = 147122559967323168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11300898 + ... + 11300921.

It is an arithmetic number, because the mean of its divisors is an integer number (52737580).

Almost surely, 2^271221828 is an apocalyptic number.

It is an amenable number.

271221828 is an abundant number, since it is smaller than the sum of its proper divisors (361629132).

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

271221828 is a wasteful number, since it uses less digits than its factorization.

271221828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22601826 (or 22601824 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 271221828 is about 16468.8138006354. The cubic root of 271221828 is about 647.3038839978.

The spelling of 271221828 in words is "two hundred seventy-one million, two hundred twenty-one thousand, eight hundred twenty-eight".