28286266 has 16 divisors (see below), whose sum is σ = 45498240. Its totient is φ = 13141440.

The previous prime is 28286239. The next prime is 28286287. The reversal of 28286266 is 66268282.

It is a super-2 number, since 2×28286266² = 1600225688445512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2580 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (2843640).

Almost surely, 2^28286266 is an apocalyptic number.

28286266 is a deficient number, since it is larger than the sum of its proper divisors (17211974).

28286266 is a wasteful number, since it uses less digits than its factorization.

28286266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10629.

The product of its digits is 110592, while the sum is 40.

The square root of 28286266 is about 5318.4834304527. The cubic root of 28286266 is about 304.6902382274.

The spelling of 28286266 in words is "twenty-eight million, two hundred eighty-six thousand, two hundred sixty-six".