28016830 has 16 divisors (see below), whose sum is σ = 53084880. Its totient is φ = 10616832.

The previous prime is 28016819. The next prime is 28016837. The reversal of 28016830 is 3861082.

28016830 = T₁₇₈ + T₁₇₉ + ... + T₅₅₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016837) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73539 + ... + 73918.

It is an arithmetic number, because the mean of its divisors is an integer number (3317805).

Almost surely, 2^28016830 is an apocalyptic number.

28016830 is a deficient number, since it is larger than the sum of its proper divisors (25068050).

28016830 is a wasteful number, since it uses less digits than its factorization.

28016830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147483.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28016830 is about 5293.0926687524. The cubic root of 28016830 is about 303.7197252309.

The spelling of 28016830 in words is "twenty-eight million, sixteen thousand, eight hundred thirty".