28290567 has 16 divisors (see below), whose sum is σ = 40301280. Its totient is φ = 17590272.

The previous prime is 28290557. The next prime is 28290571. The reversal of 28290567 is 76509282.

It is a happy number.

It is not a de Polignac number, because 28290567 - 2⁴ = 28290551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28290527) 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, 3309 + ... + 8217.

It is an arithmetic number, because the mean of its divisors is an integer number (2518830).

Almost surely, 2^28290567 is an apocalyptic number.

28290567 is a deficient number, since it is larger than the sum of its proper divisors (12010713).

28290567 is a wasteful number, since it uses less digits than its factorization.

28290567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28290567 is about 5318.8877596731. The cubic root of 28290567 is about 304.7056804247.

The spelling of 28290567 in words is "twenty-eight million, two hundred ninety thousand, five hundred sixty-seven".