28013767 has 2 divisors, whose sum is σ = 28013768. Its totient is φ = 28013766.

The previous prime is 28013759. The next prime is 28013803. The reversal of 28013767 is 76731082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28013767 - 2³ = 28013759 is a prime.

It is a super-2 number, since 2×28013767² = 1569542283060578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28013737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14006883 + 14006884.

It is an arithmetic number, because the mean of its divisors is an integer number (14006884).

Almost surely, 2^28013767 is an apocalyptic number.

28013767 is a deficient number, since it is larger than the sum of its proper divisors (1).

28013767 is an equidigital number, since it uses as much as digits as its factorization.

28013767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 28013767 is about 5292.8033214923. The cubic root of 28013767 is about 303.7086565575.

The spelling of 28013767 in words is "twenty-eight million, thirteen thousand, seven hundred sixty-seven".