28354590 has 64 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 6873120.

The previous prime is 28354577. The next prime is 28354591. The reversal of 28354590 is 9545382.

28354590 is a `hidden beast` number, since 28 + 3 + 545 + 90 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28354591) 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 31 ways as a sum of consecutive naturals, for example, 1804 + ... + 7743.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^28354590 is an apocalyptic number.

28354590 is an abundant number, since it is smaller than the sum of its proper divisors (54140130).

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

28354590 is a wasteful number, since it uses less digits than its factorization.

28354590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574 (or 9568 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 28354590 is about 5324.9028160146. The cubic root of 28354590 is about 304.9353620975.

The spelling of 28354590 in words is "twenty-eight million, three hundred fifty-four thousand, five hundred ninety".