28426877 has 4 divisors (see below), whose sum is σ = 28438620. Its totient is φ = 28415136.

The previous prime is 28426861. The next prime is 28426889. The reversal of 28426877 is 77862482.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15888196 + 12538681 = 3986^2 + 3541^2 .

It is a cyclic number.

It is not a de Polignac number, because 28426877 - 2⁴ = 28426861 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 (28426837) 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, 752 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (7109655).

Almost surely, 2^28426877 is an apocalyptic number.

It is an amenable number.

28426877 is a deficient number, since it is larger than the sum of its proper divisors (11743).

28426877 is an equidigital number, since it uses as much as digits as its factorization.

28426877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742.

The product of its digits is 301056, while the sum is 44.

The square root of 28426877 is about 5331.6861310471. The cubic root of 28426877 is about 305.1942755812.

The spelling of 28426877 in words is "twenty-eight million, four hundred twenty-six thousand, eight hundred seventy-seven".