28783079 has 8 divisors (see below), whose sum is σ = 31157280. Its totient is φ = 26431776.

The previous prime is 28783067. The next prime is 28783099. The reversal of 28783079 is 97038782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28783079 - 2⁴ = 28783063 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 (28783019) 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, 3059 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (3894660).

Almost surely, 2^28783079 is an apocalyptic number.

28783079 is a deficient number, since it is larger than the sum of its proper divisors (2374201).

28783079 is a wasteful number, since it uses less digits than its factorization.

28783079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 28783079 is about 5364.9863932726. The cubic root of 28783079 is about 306.4637300769.

The spelling of 28783079 in words is "twenty-eight million, seven hundred eighty-three thousand, seventy-nine".