71028146 has 12 divisors (see below), whose sum is σ = 123937038. Its totient is φ = 30440592.

The previous prime is 71028119. The next prime is 71028169. The reversal of 71028146 is 64182017.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 33512521 = 6125^2 + 5789^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362291 + ... + 362486.

Almost surely, 2^71028146 is an apocalyptic number.

71028146 is a deficient number, since it is larger than the sum of its proper divisors (52908892).

71028146 is a wasteful number, since it uses less digits than its factorization.

71028146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724793 (or 724786 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 71028146 is about 8427.8197655147. The cubic root of 71028146 is about 414.1364848292.

The spelling of 71028146 in words is "seventy-one million, twenty-eight thousand, one hundred forty-six".