28745303 has 4 divisors (see below), whose sum is σ = 28760160. Its totient is φ = 28730448.

The previous prime is 28745267. The next prime is 28745329. The reversal of 28745303 is 30354782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30354782 = 2 ⋅15177391.

It is a cyclic number.

It is not a de Polignac number, because 28745303 - 2⁸ = 28745047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28745303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28745333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3998 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (7190040).

Almost surely, 2^28745303 is an apocalyptic number.

28745303 is a deficient number, since it is larger than the sum of its proper divisors (14857).

28745303 is a wasteful number, since it uses less digits than its factorization.

28745303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14856.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 28745303 is about 5361.4646319826. The cubic root of 28745303 is about 306.3295998558.

The spelling of 28745303 in words is "twenty-eight million, seven hundred forty-five thousand, three hundred three".