28273766 has 8 divisors (see below), whose sum is σ = 42648120. Its totient is φ = 14057728.

The previous prime is 28273727. The next prime is 28273769. The reversal of 28273766 is 66737282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39131 + ... + 39846.

It is an arithmetic number, because the mean of its divisors is an integer number (5331015).

Almost surely, 2^28273766 is an apocalyptic number.

28273766 is a deficient number, since it is larger than the sum of its proper divisors (14374354).

28273766 is a wasteful number, since it uses less digits than its factorization.

28273766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79158.

The product of its digits is 169344, while the sum is 41.

The square root of 28273766 is about 5317.3081535679. The cubic root of 28273766 is about 304.6453496687.

The spelling of 28273766 in words is "twenty-eight million, two hundred seventy-three thousand, seven hundred sixty-six".