28408167 has 6 divisors (see below), whose sum is σ = 41034032. Its totient is φ = 18938772.

The previous prime is 28408141. The next prime is 28408181. The reversal of 28408167 is 76180482.

It is not a de Polignac number, because 28408167 - 2⁶ = 28408103 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 (28408187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1578223 + ... + 1578240.

Almost surely, 2^28408167 is an apocalyptic number.

28408167 is a deficient number, since it is larger than the sum of its proper divisors (12625865).

28408167 is a wasteful number, since it uses less digits than its factorization.

28408167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156469 (or 3156466 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28408167 is about 5329.9312378304. The cubic root of 28408167 is about 305.1273033032.

The spelling of 28408167 in words is "twenty-eight million, four hundred eight thousand, one hundred sixty-seven".