28090894 has 8 divisors (see below), whose sum is σ = 45377640. Its totient is φ = 12965016.

The previous prime is 28090877. The next prime is 28090897. The reversal of 28090894 is 49809082.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28090897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540184 + ... + 540235.

It is an arithmetic number, because the mean of its divisors is an integer number (5672205).

Almost surely, 2^28090894 is an apocalyptic number.

28090894 is a deficient number, since it is larger than the sum of its proper divisors (17286746).

28090894 is a wasteful number, since it uses less digits than its factorization.

28090894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080434.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28090894 is about 5300.0843389516. The cubic root of 28090894 is about 303.9871228964.

The spelling of 28090894 in words is "twenty-eight million, ninety thousand, eight hundred ninety-four".