71158028 has 12 divisors (see below), whose sum is σ = 124635000. Its totient is φ = 35548032.

The previous prime is 71158027. The next prime is 71158037. The reversal of 71158028 is 82085117.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71157985 and 71158003.

It is not an unprimeable number, because it can be changed into a prime (71158027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 12117.

It is an arithmetic number, because the mean of its divisors is an integer number (10386250).

Almost surely, 2^71158028 is an apocalyptic number.

It is an amenable number.

71158028 is a deficient number, since it is larger than the sum of its proper divisors (53476972).

71158028 is a wasteful number, since it uses less digits than its factorization.

71158028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496 (or 15494 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 71158028 is about 8435.5217977313. The cubic root of 71158028 is about 414.3887609813.

The spelling of 71158028 in words is "seventy-one million, one hundred fifty-eight thousand, twenty-eight".