28776079 has 8 divisors (see below), whose sum is σ = 29873088. Its totient is φ = 27699360.

The previous prime is 28776043. The next prime is 28776101. The reversal of 28776079 is 97067782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28776079 is a prime.

It is a super-2 number, since 2×28776079² = 1656125445228482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776379) 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, 2152 + ... + 7885.

It is an arithmetic number, because the mean of its divisors is an integer number (3734136).

Almost surely, 2^28776079 is an apocalyptic number.

28776079 is a deficient number, since it is larger than the sum of its proper divisors (1097009).

28776079 is a wasteful number, since it uses less digits than its factorization.

28776079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10145.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 28776079 is about 5364.3339754344. Note that the first 3 decimals coincide. The cubic root of 28776079 is about 306.4388842286.

The spelling of 28776079 in words is "twenty-eight million, seven hundred seventy-six thousand, seventy-nine".