28486877 has 2 divisors, whose sum is σ = 28486878. Its totient is φ = 28486876.

The previous prime is 28486819. The next prime is 28486879. The reversal of 28486877 is 77868482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16556761 + 11930116 = 4069^2 + 3454^2 .

It is a cyclic number.

It is not a de Polignac number, because 28486877 - 2¹⁸ = 28224733 is a prime.

It is a super-2 number, since 2×28486877² = 1623004322426258, which contains 22 as substring.

Together with 28486879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28486879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243438 + 14243439.

It is an arithmetic number, because the mean of its divisors is an integer number (14243439).

Almost surely, 2^28486877 is an apocalyptic number.

It is an amenable number.

28486877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28486877 is an equidigital number, since it uses as much as digits as its factorization.

28486877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1204224, while the sum is 50.

The square root of 28486877 is about 5337.3099029380. The cubic root of 28486877 is about 305.4088470269.

The spelling of 28486877 in words is "twenty-eight million, four hundred eighty-six thousand, eight hundred seventy-seven".