28750253 has 16 divisors (see below), whose sum is σ = 34461696. Its totient is φ = 23451120.

The previous prime is 28750217. The next prime is 28750259. The reversal of 28750253 is 35205782.

It is not a de Polignac number, because 28750253 - 2¹⁰ = 28749229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45248 + ... + 45878.

It is an arithmetic number, because the mean of its divisors is an integer number (2153856).

Almost surely, 2^28750253 is an apocalyptic number.

28750253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28750253 is a deficient number, since it is larger than the sum of its proper divisors (5711443).

28750253 is a wasteful number, since it uses less digits than its factorization.

28750253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 28750253 is about 5361.9262397015. The cubic root of 28750253 is about 306.3471823746.

The spelling of 28750253 in words is "twenty-eight million, seven hundred fifty thousand, two hundred fifty-three".