28876136 has 16 divisors (see below), whose sum is σ = 55463940. Its totient is φ = 14085760.

The previous prime is 28876121. The next prime is 28876151. The reversal of 28876136 is 63167882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28876121) and next prime (28876151).

It can be written as a sum of positive squares in 2 ways, for example, as 28153636 + 722500 = 5306^2 + 850^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 28876093 and 28876102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43691 + ... + 44346.

Almost surely, 2^28876136 is an apocalyptic number.

It is an amenable number.

28876136 is a deficient number, since it is larger than the sum of its proper divisors (26587804).

28876136 is a wasteful number, since it uses less digits than its factorization.

28876136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88084 (or 88080 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 28876136 is about 5373.6520170178. The cubic root of 28876136 is about 306.7936451686.

The spelling of 28876136 in words is "twenty-eight million, eight hundred seventy-six thousand, one hundred thirty-six".