28294045 has 16 divisors (see below), whose sum is σ = 36755712. Its totient is φ = 20784960.

The previous prime is 28294037. The next prime is 28294061. The reversal of 28294045 is 54049282.

It is not a de Polignac number, because 28294045 - 2³ = 28294037 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 28294045.

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, 12684 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (2297232).

Almost surely, 2^28294045 is an apocalyptic number.

It is an amenable number.

28294045 is a deficient number, since it is larger than the sum of its proper divisors (8461667).

28294045 is a wasteful number, since it uses less digits than its factorization.

28294045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28294045 is about 5319.2146976786. The cubic root of 28294045 is about 304.7181665999.

The spelling of 28294045 in words is "twenty-eight million, two hundred ninety-four thousand, forty-five".