28866830 has 8 divisors (see below), whose sum is σ = 51960312. Its totient is φ = 11546728.

The previous prime is 28866809. The next prime is 28866853. The reversal of 28866830 is 3866882.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443332 + ... + 1443351.

It is an arithmetic number, because the mean of its divisors is an integer number (6495039).

Almost surely, 2^28866830 is an apocalyptic number.

28866830 is a deficient number, since it is larger than the sum of its proper divisors (23093482).

28866830 is a wasteful number, since it uses less digits than its factorization.

28866830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886690.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 28866830 is about 5372.7860556698. The cubic root of 28866830 is about 306.7606845211.

The spelling of 28866830 in words is "twenty-eight million, eight hundred sixty-six thousand, eight hundred thirty".