28145116 has 12 divisors (see below), whose sum is σ = 49366800. Its totient is φ = 14040320.

The previous prime is 28145111. The next prime is 28145153. The reversal of 28145116 is 61154182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28145111) 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, 6040 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (4113900).

Almost surely, 2^28145116 is an apocalyptic number.

It is an amenable number.

28145116 is a deficient number, since it is larger than the sum of its proper divisors (21221684).

28145116 is a wasteful number, since it uses less digits than its factorization.

28145116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16124 (or 16122 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 28145116 is about 5305.1970745675. The cubic root of 28145116 is about 304.1825859519.

Adding to 28145116 its reverse (61154182), we get a palindrome (89299298).

The spelling of 28145116 in words is "twenty-eight million, one hundred forty-five thousand, one hundred sixteen".