28831877 has 4 divisors (see below), whose sum is σ = 28924896. Its totient is φ = 28738860.

The previous prime is 28831871. The next prime is 28831889. The reversal of 28831877 is 77813882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28831877 - 2¹⁰ = 28830853 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 (28831871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46043 + ... + 46664.

It is an arithmetic number, because the mean of its divisors is an integer number (7231224).

Almost surely, 2^28831877 is an apocalyptic number.

It is an amenable number.

28831877 is a deficient number, since it is larger than the sum of its proper divisors (93019).

28831877 is an equidigital number, since it uses as much as digits as its factorization.

28831877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93018.

The product of its digits is 150528, while the sum is 44.

The square root of 28831877 is about 5369.5322887566. The cubic root of 28831877 is about 306.6368222112.

The spelling of 28831877 in words is "twenty-eight million, eight hundred thirty-one thousand, eight hundred seventy-seven".