71005228 has 12 divisors (see below), whose sum is σ = 142010512. Its totient is φ = 30430800.

The previous prime is 71005219. The next prime is 71005229. The reversal of 71005228 is 82250017.

71005228 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (71005229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267923 + ... + 1267978.

Almost surely, 2^71005228 is an apocalyptic number.

It is an amenable number.

71005228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71005228 is a wasteful number, since it uses less digits than its factorization.

71005228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535912 (or 2535910 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 71005228 is about 8426.4599921913. The cubic root of 71005228 is about 414.0919381648.

The spelling of 71005228 in words is "seventy-one million, five thousand, two hundred twenty-eight".