28440759 has 8 divisors (see below), whose sum is σ = 38803072. Its totient is φ = 18519480.

The previous prime is 28440749. The next prime is 28440791. The reversal of 28440759 is 95704482.

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

It is not a de Polignac number, because 28440759 - 2⁴ = 28440743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28440749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110107 + ... + 110364.

It is an arithmetic number, because the mean of its divisors is an integer number (4850384).

Almost surely, 2^28440759 is an apocalyptic number.

28440759 is a deficient number, since it is larger than the sum of its proper divisors (10362313).

28440759 is a wasteful number, since it uses less digits than its factorization.

28440759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220517.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28440759 is about 5332.9878117243. The cubic root of 28440759 is about 305.2439470883.

The spelling of 28440759 in words is "twenty-eight million, four hundred forty thousand, seven hundred fifty-nine".