28079774 has 16 divisors (see below), whose sum is σ = 44022528. Its totient is φ = 13419672.

The previous prime is 28079773. The next prime is 28079791. The reversal of 28079774 is 47797082.

28079774 = 787² + 788² + ... + 829².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28079773) 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, 569 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (2751408).

Almost surely, 2^28079774 is an apocalyptic number.

28079774 is a deficient number, since it is larger than the sum of its proper divisors (15942754).

28079774 is a wasteful number, since it uses less digits than its factorization.

28079774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 28079774 is about 5299.0351952030. The cubic root of 28079774 is about 303.9470057093.

The spelling of 28079774 in words is "twenty-eight million, seventy-nine thousand, seven hundred seventy-four".