28634766 has 32 divisors (see below), whose sum is σ = 61129728. Its totient is φ = 8910720.

The previous prime is 28634741. The next prime is 28634777. The reversal of 28634766 is 66743682.

28634766 = 401² + 402² + ... + 531².

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 15 ways as a sum of consecutive naturals, for example, 12291 + ... + 14433.

It is an arithmetic number, because the mean of its divisors is an integer number (1910304).

Almost surely, 2^28634766 is an apocalyptic number.

28634766 is an abundant number, since it is smaller than the sum of its proper divisors (32494962).

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

28634766 is a wasteful number, since it uses less digits than its factorization.

28634766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296.

The product of its digits is 290304, while the sum is 42.

The square root of 28634766 is about 5351.1462323506. The cubic root of 28634766 is about 305.9364428638.

The spelling of 28634766 in words is "twenty-eight million, six hundred thirty-four thousand, seven hundred sixty-six".