28752093 has 12 divisors (see below), whose sum is σ = 43336800. Its totient is φ = 18334536.

The previous prime is 28752067. The next prime is 28752103. The reversal of 28752093 is 39025782.

It is a happy number.

It is not a de Polignac number, because 28752093 - 2⁹ = 28751581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28752043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69243 + ... + 69656.

It is an arithmetic number, because the mean of its divisors is an integer number (3611400).

Almost surely, 2^28752093 is an apocalyptic number.

28752093 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28752093 is a deficient number, since it is larger than the sum of its proper divisors (14584707).

28752093 is a wasteful number, since it uses less digits than its factorization.

28752093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138928 (or 138925 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28752093 is about 5362.0978170861. The cubic root of 28752093 is about 306.3537175842.

The spelling of 28752093 in words is "twenty-eight million, seven hundred fifty-two thousand, ninety-three".