28785754 has 4 divisors (see below), whose sum is σ = 43178634. Its totient is φ = 14392876.

The previous prime is 28785749. The next prime is 28785767. The reversal of 28785754 is 45758782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45758782 = 2 ⋅22879391.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 6365529 = 4735^2 + 2523^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7196437 + ... + 7196440.

Almost surely, 2^28785754 is an apocalyptic number.

28785754 is a deficient number, since it is larger than the sum of its proper divisors (14392880).

28785754 is a wasteful number, since it uses less digits than its factorization.

28785754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14392879.

The product of its digits is 627200, while the sum is 46.

The square root of 28785754 is about 5365.2356891380. The cubic root of 28785754 is about 306.4732236765.

The spelling of 28785754 in words is "twenty-eight million, seven hundred eighty-five thousand, seven hundred fifty-four".