28063590 has 32 divisors (see below), whose sum is σ = 69677280. Its totient is φ = 7225344.

The previous prime is 28063579. The next prime is 28063591. The reversal of 28063590 is 9536082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063591) 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, 15259 + ... + 16998.

It is an arithmetic number, because the mean of its divisors is an integer number (2177415).

Almost surely, 2^28063590 is an apocalyptic number.

28063590 is an abundant number, since it is smaller than the sum of its proper divisors (41613690).

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

28063590 is a wasteful number, since it uses less digits than its factorization.

28063590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32296.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 28063590 is about 5297.5079046661. The cubic root of 28063590 is about 303.8886003996. Note that the first 3 decimals are identical.

The spelling of 28063590 in words is "twenty-eight million, sixty-three thousand, five hundred ninety".