28685367 has 16 divisors (see below), whose sum is σ = 42720480. Its totient is φ = 19022976.

The previous prime is 28685359. The next prime is 28685401. The reversal of 28685367 is 76358682.

28685367 is a `hidden beast` number, since 286 + 8 + 5 + 367 = 666.

It is not a de Polignac number, because 28685367 - 2³ = 28685359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28685467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2623 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (2670030).

Almost surely, 2^28685367 is an apocalyptic number.

28685367 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28685367 is a deficient number, since it is larger than the sum of its proper divisors (14035113).

28685367 is a wasteful number, since it uses less digits than its factorization.

28685367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599 (or 5593 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 28685367 is about 5355.8721978778. The cubic root of 28685367 is about 306.1165453792.

The spelling of 28685367 in words is "twenty-eight million, six hundred eighty-five thousand, three hundred sixty-seven".