28765266 has 8 divisors (see below), whose sum is σ = 57530544. Its totient is φ = 9588420.

The previous prime is 28765223. The next prime is 28765277. The reversal of 28765266 is 66256782.

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

28765266 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2397100 + ... + 2397111.

It is an arithmetic number, because the mean of its divisors is an integer number (7191318).

Almost surely, 2^28765266 is an apocalyptic number.

28765266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28765266 is a wasteful number, since it uses less digits than its factorization.

28765266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794216.

The product of its digits is 241920, while the sum is 42.

The square root of 28765266 is about 5363.3260202975. The cubic root of 28765266 is about 306.4004965713.

The spelling of 28765266 in words is "twenty-eight million, seven hundred sixty-five thousand, two hundred sixty-six".