28679966 has 8 divisors (see below), whose sum is σ = 49165680. Its totient is φ = 12291408.

The previous prime is 28679957. The next prime is 28679999. The reversal of 28679966 is 66997682.

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

It is a super-2 number, since 2×28679966² = 1645080899522312, which contains 22 as substring.

It is a Curzon number.

It is a congruent 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, 1024271 + ... + 1024298.

It is an arithmetic number, because the mean of its divisors is an integer number (6145710).

Almost surely, 2^28679966 is an apocalyptic number.

28679966 is a deficient number, since it is larger than the sum of its proper divisors (20485714).

28679966 is a wasteful number, since it uses less digits than its factorization.

28679966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048578.

The product of its digits is 1959552, while the sum is 53.

The square root of 28679966 is about 5355.3679612142. The cubic root of 28679966 is about 306.0973318752.

The spelling of 28679966 in words is "twenty-eight million, six hundred seventy-nine thousand, nine hundred sixty-six".