28757355 has 32 divisors (see below), whose sum is σ = 52842240. Its totient is φ = 13207680.

The previous prime is 28757341. The next prime is 28757363. The reversal of 28757355 is 55375782.

It is not a de Polignac number, because 28757355 - 2¹³ = 28749163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (1651320).

Almost surely, 2^28757355 is an apocalyptic number.

28757355 is a deficient number, since it is larger than the sum of its proper divisors (24084885).

28757355 is a wasteful number, since it uses less digits than its factorization.

28757355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9211.

The product of its digits is 294000, while the sum is 42.

The square root of 28757355 is about 5362.5884608088. The cubic root of 28757355 is about 306.3724053244.

The spelling of 28757355 in words is "twenty-eight million, seven hundred fifty-seven thousand, three hundred fifty-five".