28803723 has 16 divisors (see below), whose sum is σ = 42479136. Its totient is φ = 17245440.

The previous prime is 28803721. The next prime is 28803767. The reversal of 28803723 is 32730882.

It is a happy number.

It is not a de Polignac number, because 28803723 - 2¹ = 28803721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28803721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8538 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (2654946).

Almost surely, 2^28803723 is an apocalyptic number.

28803723 is a deficient number, since it is larger than the sum of its proper divisors (13675413).

28803723 is a wasteful number, since it uses less digits than its factorization.

28803723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20014.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28803723 is about 5366.9100048352. The cubic root of 28803723 is about 306.5369805828.

The spelling of 28803723 in words is "twenty-eight million, eight hundred three thousand, seven hundred twenty-three".