28126867 has 2 divisors, whose sum is σ = 28126868. Its totient is φ = 28126866.

The previous prime is 28126849. The next prime is 28126871. The reversal of 28126867 is 76862182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28126867 - 2¹¹ = 28124819 is a prime.

It is a super-2 number, since 2×28126867² = 1582241294471378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28126877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14063433 + 14063434.

It is an arithmetic number, because the mean of its divisors is an integer number (14063434).

Almost surely, 2^28126867 is an apocalyptic number.

28126867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28126867 is an equidigital number, since it uses as much as digits as its factorization.

28126867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 28126867 is about 5303.4768784261. The cubic root of 28126867 is about 304.1168287979.

The spelling of 28126867 in words is "twenty-eight million, one hundred twenty-six thousand, eight hundred sixty-seven".