971885228 has 12 divisors (see below), whose sum is σ = 1706166672. Its totient is φ = 484409040.

The previous prime is 971885209. The next prime is 971885231. The reversal of 971885228 is 822588179.

It is a happy number.

It is a super-2 number, since 2×971885228² = 1889121792809223968, 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, 381968 + ... + 384503.

It is an arithmetic number, because the mean of its divisors is an integer number (142180556).

Almost surely, 2^971885228 is an apocalyptic number.

It is an amenable number.

971885228 is a deficient number, since it is larger than the sum of its proper divisors (734281444).

971885228 is a wasteful number, since it uses less digits than its factorization.

971885228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766792 (or 766790 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 971885228 is about 31175.0738250930. The cubic root of 971885228 is about 990.5391845746.

The spelling of 971885228 in words is "nine hundred seventy-one million, eight hundred eighty-five thousand, two hundred twenty-eight".