28016230 has 32 divisors (see below), whose sum is σ = 56194560. Its totient is φ = 9969120.

The previous prime is 28016207. The next prime is 28016239. The reversal of 28016230 is 3261082.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2461 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (1756080).

Almost surely, 2^28016230 is an apocalyptic number.

28016230 is an abundant number, since it is smaller than the sum of its proper divisors (28178330).

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

28016230 is a wasteful number, since it uses less digits than its factorization.

28016230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 28016230 is about 5293.0359908091. The cubic root of 28016230 is about 303.7175570920.

The spelling of 28016230 in words is "twenty-eight million, sixteen thousand, two hundred thirty".