28992877 has 8 divisors (see below), whose sum is σ = 29289920. Its totient is φ = 28697760.

The previous prime is 28992869. The next prime is 28992881. The reversal of 28992877 is 77829982.

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 28992877 - 2³ = 28992869 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 (28992377) 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, 65824 + ... + 66262.

It is an arithmetic number, because the mean of its divisors is an integer number (3661240).

Almost surely, 2^28992877 is an apocalyptic number.

It is an amenable number.

28992877 is a deficient number, since it is larger than the sum of its proper divisors (297043).

28992877 is a wasteful number, since it uses less digits than its factorization.

28992877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963.

The product of its digits is 1016064, while the sum is 52.

The square root of 28992877 is about 5384.5034125720. The cubic root of 28992877 is about 307.2065263563.

It can be divided in two parts, 2899 and 2877, that added together give a square (5776 = 76²).

The spelling of 28992877 in words is "twenty-eight million, nine hundred ninety-two thousand, eight hundred seventy-seven".