28789167 has 12 divisors (see below), whose sum is σ = 42192920. Its totient is φ = 17447760.

The previous prime is 28789153. The next prime is 28789183. The reversal of 28789167 is 76198782.

It is not a de Polignac number, because 28789167 - 2¹⁰ = 28788143 is a prime.

It is a super-2 number, since 2×28789167² = 1657632273107778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28789127) 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, 39292 + ... + 40017.

Almost surely, 2^28789167 is an apocalyptic number.

28789167 is a deficient number, since it is larger than the sum of its proper divisors (13403753).

28789167 is a wasteful number, since it uses less digits than its factorization.

28789167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79334 (or 79323 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 28789167 is about 5365.5537458868. The cubic root of 28789167 is about 306.4853355910.

The spelling of 28789167 in words is "twenty-eight million, seven hundred eighty-nine thousand, one hundred sixty-seven".