28111016 has 8 divisors (see below), whose sum is σ = 52708170. Its totient is φ = 14055504.

The previous prime is 28111003. The next prime is 28111019. The reversal of 28111016 is 61011182.

It can be written as a sum of positive squares in only one way, i.e., 24462916 + 3648100 = 4946^2 + 1910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28111019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1756931 + ... + 1756946.

Almost surely, 2^28111016 is an apocalyptic number.

It is an amenable number.

28111016 is a deficient number, since it is larger than the sum of its proper divisors (24597154).

28111016 is a wasteful number, since it uses less digits than its factorization.

28111016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513883 (or 3513879 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 28111016 is about 5301.9822708115. The cubic root of 28111016 is about 304.0596893413.

Adding to 28111016 its reverse (61011182), we get a palindrome (89122198).

The spelling of 28111016 in words is "twenty-eight million, one hundred eleven thousand, sixteen".