28669266 has 12 divisors (see below), whose sum is σ = 62116782. Its totient is φ = 9556416.

The previous prime is 28669253. The next prime is 28669283. The reversal of 28669266 is 66296682.

It can be written as a sum of positive squares in only one way, i.e., 25796241 + 2873025 = 5079^2 + 1695^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 796351 + ... + 796386.

Almost surely, 2^28669266 is an apocalyptic number.

28669266 is an abundant number, since it is smaller than the sum of its proper divisors (33447516).

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

28669266 is a wasteful number, since it uses less digits than its factorization.

28669266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592745 (or 1592742 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28669266 is about 5354.3688703712. The cubic root of 28669266 is about 306.0592605976.

The spelling of 28669266 in words is "twenty-eight million, six hundred sixty-nine thousand, two hundred sixty-six".