28394245 has 16 divisors (see below), whose sum is σ = 37275840. Its totient is φ = 20592000.

The previous prime is 28394203. The next prime is 28394257. The reversal of 28394245 is 54249382.

It is a happy number.

It is not a de Polignac number, because 28394245 - 2¹⁷ = 28263173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32626 + ... + 33484.

It is an arithmetic number, because the mean of its divisors is an integer number (2329740).

Almost surely, 2^28394245 is an apocalyptic number.

It is an amenable number.

28394245 is a deficient number, since it is larger than the sum of its proper divisors (8881595).

28394245 is a wasteful number, since it uses less digits than its factorization.

28394245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476.

The product of its digits is 69120, while the sum is 37.

The square root of 28394245 is about 5328.6250571794. The cubic root of 28394245 is about 305.0774505449.

The spelling of 28394245 in words is "twenty-eight million, three hundred ninety-four thousand, two hundred forty-five".