28733750 has 40 divisors (see below), whose sum is σ = 54582528. Its totient is φ = 11340000.

The previous prime is 28733717. The next prime is 28733759. The reversal of 28733750 is 5733782.

It is a self number, because there is not a number n which added to its sum of digits gives 28733750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28733759) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 158660 + ... + 158840.

Almost surely, 2^28733750 is an apocalyptic number.

28733750 is a deficient number, since it is larger than the sum of its proper divisors (25848778).

28733750 is a wasteful number, since it uses less digits than its factorization.

28733750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 28733750 is about 5360.3871128865. The cubic root of 28733750 is about 306.2885554679.

The spelling of 28733750 in words is "twenty-eight million, seven hundred thirty-three thousand, seven hundred fifty".