28364877 has 16 divisors (see below), whose sum is σ = 42264000. Its totient is φ = 18801072.

The previous prime is 28364873. The next prime is 28364879. The reversal of 28364877 is 77846382.

It is a happy number.

It is not a de Polignac number, because 28364877 - 2² = 28364873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28364873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1899 + ... + 7767.

It is an arithmetic number, because the mean of its divisors is an integer number (2641500).

Almost surely, 2^28364877 is an apocalyptic number.

28364877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28364877 is a deficient number, since it is larger than the sum of its proper divisors (13899123).

28364877 is a wasteful number, since it uses less digits than its factorization.

28364877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057 (or 6051 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 28364877 is about 5325.8686615425. The cubic root of 28364877 is about 304.9722343263.

It can be divided in two parts, 28364 and 877, that added together give a square (29241 = 171²).

The spelling of 28364877 in words is "twenty-eight million, three hundred sixty-four thousand, eight hundred seventy-seven".