71835728 has 10 divisors (see below), whose sum is σ = 139181754. Its totient is φ = 35917856.

The previous prime is 71835719. The next prime is 71835737. The reversal of 71835728 is 82753817.

It is an interprime number because it is at equal distance from previous prime (71835719) and next prime (71835737).

It can be written as a sum of positive squares in only one way, i.e., 71436304 + 399424 = 8452^2 + 632^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2244851 + ... + 2244882.

Almost surely, 2^71835728 is an apocalyptic number.

It is an amenable number.

71835728 is a deficient number, since it is larger than the sum of its proper divisors (67346026).

71835728 is a wasteful number, since it uses less digits than its factorization.

71835728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489741 (or 4489735 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 71835728 is about 8475.5960262391. The cubic root of 71835728 is about 415.7001352321.

The spelling of 71835728 in words is "seventy-one million, eight hundred thirty-five thousand, seven hundred twenty-eight".