28775367 has 12 divisors (see below), whose sum is σ = 43752280. Its totient is φ = 18173808.

The previous prime is 28775333. The next prime is 28775371. The reversal of 28775367 is 76357782.

28775367 is a `hidden beast` number, since 287 + 7 + 5 + 367 = 666.

It is not a de Polignac number, because 28775367 - 2⁷ = 28775239 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 (28775867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83968 + ... + 84309.

Almost surely, 2^28775367 is an apocalyptic number.

28775367 is a deficient number, since it is larger than the sum of its proper divisors (14976913).

28775367 is a wasteful number, since it uses less digits than its factorization.

28775367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168302 (or 168299 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 28775367 is about 5364.2676107741. The cubic root of 28775367 is about 306.4363568251.

The spelling of 28775367 in words is "twenty-eight million, seven hundred seventy-five thousand, three hundred sixty-seven".