28757045 has 8 divisors (see below), whose sum is σ = 34632096. Its totient is φ = 22923216.

The previous prime is 28757039. The next prime is 28757063. The reversal of 28757045 is 54075782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28757045 - 2²⁴ = 11979829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8747 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (4329012).

Almost surely, 2^28757045 is an apocalyptic number.

It is an amenable number.

28757045 is a deficient number, since it is larger than the sum of its proper divisors (5875051).

28757045 is a wasteful number, since it uses less digits than its factorization.

28757045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20611.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 28757045 is about 5362.5595567788. The cubic root of 28757045 is about 306.3713044375.

The spelling of 28757045 in words is "twenty-eight million, seven hundred fifty-seven thousand, forty-five".