28063816 has 16 divisors (see below), whose sum is σ = 57403440. Its totient is φ = 12756240.

The previous prime is 28063811. The next prime is 28063829. The reversal of 28063816 is 61836082.

It is not an unprimeable number, because it can be changed into a prime (28063811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159366 + ... + 159541.

It is an arithmetic number, because the mean of its divisors is an integer number (3587715).

Almost surely, 2^28063816 is an apocalyptic number.

It is an amenable number.

28063816 is an abundant number, since it is smaller than the sum of its proper divisors (29339624).

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

28063816 is a wasteful number, since it uses less digits than its factorization.

28063816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318924 (or 318920 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28063816 is about 5297.5292354078. The cubic root of 28063816 is about 303.8894161498.

Adding to 28063816 its reverse (61836082), we get a palindrome (89899898).

The spelling of 28063816 in words is "twenty-eight million, sixty-three thousand, eight hundred sixteen".