71728572 has 24 divisors (see below), whose sum is σ = 176176000. Its totient is φ = 22651056.

The previous prime is 71728567. The next prime is 71728577. The reversal of 71728572 is 27582717.

It is an interprime number because it is at equal distance from previous prime (71728567) and next prime (71728577).

It is a self number, because there is not a number n which added to its sum of digits gives 71728572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71728577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157072 + ... + 157527.

Almost surely, 2^71728572 is an apocalyptic number.

It is an amenable number.

71728572 is an abundant number, since it is smaller than the sum of its proper divisors (104447428).

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

71728572 is a wasteful number, since it uses less digits than its factorization.

71728572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314625 (or 314623 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 71728572 is about 8469.2722237510. The cubic root of 71728572 is about 415.4933350221.

The spelling of 71728572 in words is "seventy-one million, seven hundred twenty-eight thousand, five hundred seventy-two".