28375767 has 24 divisors (see below), whose sum is σ = 48881664. Its totient is φ = 15508944.

The previous prime is 28375729. The next prime is 28375777. The reversal of 28375767 is 76757382.

It is not a de Polignac number, because 28375767 - 2¹⁹ = 27851479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28375727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8343 + ... + 11240.

It is an arithmetic number, because the mean of its divisors is an integer number (2036736).

Almost surely, 2^28375767 is an apocalyptic number.

28375767 is a deficient number, since it is larger than the sum of its proper divisors (20505897).

28375767 is a wasteful number, since it uses less digits than its factorization.

28375767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619 (or 19616 counting only the distinct ones).

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

The square root of 28375767 is about 5326.8909318664. The cubic root of 28375767 is about 305.0112582067.

The spelling of 28375767 in words is "twenty-eight million, three hundred seventy-five thousand, seven hundred sixty-seven".