28459580 has 12 divisors (see below), whose sum is σ = 59765160. Its totient is φ = 11383824.

The previous prime is 28459577. The next prime is 28459583. The reversal of 28459580 is 8595482.

It is an interprime number because it is at equal distance from previous prime (28459577) and next prime (28459583).

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28459583) 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, 711470 + ... + 711509.

It is an arithmetic number, because the mean of its divisors is an integer number (4980430).

Almost surely, 2^28459580 is an apocalyptic number.

28459580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28459580 is an abundant number, since it is smaller than the sum of its proper divisors (31305580).

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

28459580 is a wasteful number, since it uses less digits than its factorization.

28459580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422988 (or 1422986 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 28459580 is about 5334.7521029566. The cubic root of 28459580 is about 305.3112651408.

The spelling of 28459580 in words is "twenty-eight million, four hundred fifty-nine thousand, five hundred eighty".