71125728 has 24 divisors (see below), whose sum is σ = 186705288. Its totient is φ = 23708544.

The previous prime is 71125727. The next prime is 71125753. The reversal of 71125728 is 82752117.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71125727) 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, 370351 + ... + 370542.

It is an arithmetic number, because the mean of its divisors is an integer number (7779387).

Almost surely, 2^71125728 is an apocalyptic number.

It is an amenable number.

71125728 is an abundant number, since it is smaller than the sum of its proper divisors (115579560).

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

71125728 is a wasteful number, since it uses less digits than its factorization.

71125728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740906 (or 740898 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The square root of 71125728 is about 8433.6070574814. The cubic root of 71125728 is about 414.3260518110.

The spelling of 71125728 in words is "seventy-one million, one hundred twenty-five thousand, seven hundred twenty-eight".