75728286 has 24 divisors (see below), whose sum is σ = 164328840. Its totient is φ = 25204176.

The previous prime is 75728269. The next prime is 75728297. The reversal of 75728286 is 68282757.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10456 + ... + 16148.

It is an arithmetic number, because the mean of its divisors is an integer number (6847035).

Almost surely, 2^75728286 is an apocalyptic number.

75728286 is an abundant number, since it is smaller than the sum of its proper divisors (88600554).

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

75728286 is a wasteful number, since it uses less digits than its factorization.

75728286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440 (or 6437 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 75728286 is about 8702.2000666498. The cubic root of 75728286 is about 423.0769606628.

The spelling of 75728286 in words is "seventy-five million, seven hundred twenty-eight thousand, two hundred eighty-six".