28556994 has 32 divisors (see below), whose sum is σ = 58282560. Its totient is φ = 9326592.

The previous prime is 28556993. The next prime is 28557013. The reversal of 28556994 is 49965582.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28556993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80722 + ... + 81074.

It is an arithmetic number, because the mean of its divisors is an integer number (1821330).

Almost surely, 2^28556994 is an apocalyptic number.

28556994 is an abundant number, since it is smaller than the sum of its proper divisors (29725566).

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

28556994 is a wasteful number, since it uses less digits than its factorization.

28556994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its digits is 777600, while the sum is 48.

The square root of 28556994 is about 5343.8744371476. The cubic root of 28556994 is about 305.6592173582.

The spelling of 28556994 in words is "twenty-eight million, five hundred fifty-six thousand, nine hundred ninety-four".