71122028 has 6 divisors (see below), whose sum is σ = 124463556. Its totient is φ = 35561012.

The previous prime is 71122027. The next prime is 71122147. The reversal of 71122028 is 82022117.

It is a junction number, because it is equal to n+sod(n) for n = 71121994 and 71122012.

It is not an unprimeable number, because it can be changed into a prime (71122027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8890250 + ... + 8890257.

It is an arithmetic number, because the mean of its divisors is an integer number (20743926).

Almost surely, 2^71122028 is an apocalyptic number.

It is an amenable number.

71122028 is a deficient number, since it is larger than the sum of its proper divisors (53341528).

71122028 is a wasteful number, since it uses less digits than its factorization.

71122028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17780511 (or 17780509 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 71122028 is about 8433.3876941594. The cubic root of 71122028 is about 414.3188671957.

The spelling of 71122028 in words is "seventy-one million, one hundred twenty-two thousand, twenty-eight".