28250666 has 16 divisors (see below), whose sum is σ = 43476480. Its totient is φ = 13761360.

The previous prime is 28250659. The next prime is 28250689. The reversal of 28250666 is 66605282.

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, 24920 + ... + 26028.

It is an arithmetic number, because the mean of its divisors is an integer number (2717280).

Almost surely, 2^28250666 is an apocalyptic number.

28250666 is a deficient number, since it is larger than the sum of its proper divisors (15225814).

28250666 is a wasteful number, since it uses less digits than its factorization.

28250666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28250666 is about 5315.1355580079. The cubic root of 28250666 is about 304.5623607834.

The spelling of 28250666 in words is "twenty-eight million, two hundred fifty thousand, six hundred sixty-six".