235640728 has 16 divisors (see below), whose sum is σ = 442779480. Its totient is φ = 117566208.

The previous prime is 235640719. The next prime is 235640789. The reversal of 235640728 is 827046532.

235640728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27801 + ... + 35272.

Almost surely, 2^235640728 is an apocalyptic number.

It is an amenable number.

235640728 is a deficient number, since it is larger than the sum of its proper divisors (207138752).

235640728 is a wasteful number, since it uses less digits than its factorization.

235640728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63546 (or 63542 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 235640728 is about 15350.5937344456. The cubic root of 235640728 is about 617.6609123502.

The spelling of 235640728 in words is "two hundred thirty-five million, six hundred forty thousand, seven hundred twenty-eight".