28906779 has 12 divisors (see below), whose sum is σ = 42365288. Its totient is φ = 17519040.

The previous prime is 28906769. The next prime is 28906807. The reversal of 28906779 is 97760982.

It is not a de Polignac number, because 28906779 - 2⁵ = 28906747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28906729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39454 + ... + 40179.

Almost surely, 2^28906779 is an apocalyptic number.

28906779 is a deficient number, since it is larger than the sum of its proper divisors (13458509).

28906779 is a wasteful number, since it uses less digits than its factorization.

28906779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79658 (or 79647 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 28906779 is about 5376.5024876773. The cubic root of 28906779 is about 306.9021286835.

It can be divided in two parts, 2890 and 6779, that added together give a palindrome (9669).

The spelling of 28906779 in words is "twenty-eight million, nine hundred six thousand, seven hundred seventy-nine".