28354877 has 4 divisors (see below), whose sum is σ = 28390236. Its totient is φ = 28319520.

The previous prime is 28354871. The next prime is 28354889. The reversal of 28354877 is 77845382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 22174681 = 2486^2 + 4709^2 .

It is a cyclic number.

It is not a de Polignac number, because 28354877 - 2⁸ = 28354621 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 (28354871) 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 3 ways as a sum of consecutive naturals, for example, 16448 + ... + 18089.

It is an arithmetic number, because the mean of its divisors is an integer number (7097559).

Almost surely, 2^28354877 is an apocalyptic number.

It is an amenable number.

28354877 is a deficient number, since it is larger than the sum of its proper divisors (35359).

28354877 is an equidigital number, since it uses as much as digits as its factorization.

28354877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35358.

The product of its digits is 376320, while the sum is 44.

The square root of 28354877 is about 5324.9297647950. The cubic root of 28354877 is about 304.9363909274.

The spelling of 28354877 in words is "twenty-eight million, three hundred fifty-four thousand, eight hundred seventy-seven".