28116036 has 36 divisors (see below), whose sum is σ = 76539372. Its totient is φ = 8650944.

The previous prime is 28115999. The next prime is 28116043. The reversal of 28116036 is 63061182.

It can be written as a sum of positive squares in 2 ways, for example, as 7322436 + 20793600 = 2706^2 + 4560^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28116036² = 1581022960706592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29571 + ... + 30506.

Almost surely, 2^28116036 is an apocalyptic number.

28116036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28116036 is an abundant number, since it is smaller than the sum of its proper divisors (48423336).

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

28116036 is a wasteful number, since it uses less digits than its factorization.

28116036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60100 (or 60095 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28116036 is about 5302.4556575232. The cubic root of 28116036 is about 304.0777876886.

The spelling of 28116036 in words is "twenty-eight million, one hundred sixteen thousand, thirty-six".