28563294 has 16 divisors (see below), whose sum is σ = 57910032. Its totient is φ = 9390528.

The previous prime is 28563287. The next prime is 28563313. The reversal of 28563294 is 49236582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32169 + ... + 33044.

It is an arithmetic number, because the mean of its divisors is an integer number (3619377).

Almost surely, 2^28563294 is an apocalyptic number.

28563294 is an abundant number, since it is smaller than the sum of its proper divisors (29346738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28563294 is a wasteful number, since it uses less digits than its factorization.

28563294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65291.

The product of its digits is 103680, while the sum is 39.

The square root of 28563294 is about 5344.4638645986. The cubic root of 28563294 is about 305.6816930137.

The spelling of 28563294 in words is "twenty-eight million, five hundred sixty-three thousand, two hundred ninety-four".