28877012 has 6 divisors (see below), whose sum is σ = 50534778. Its totient is φ = 14438504.

The previous prime is 28876963. The next prime is 28877021. The reversal of 28877012 is 21077882.

It can be written as a sum of positive squares in only one way, i.e., 15888196 + 12988816 = 3986^2 + 3604^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3609623 + ... + 3609630.

It is an arithmetic number, because the mean of its divisors is an integer number (8422463).

Almost surely, 2^28877012 is an apocalyptic number.

It is an amenable number.

28877012 is a deficient number, since it is larger than the sum of its proper divisors (21657766).

28877012 is a wasteful number, since it uses less digits than its factorization.

28877012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219257 (or 7219255 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 28877012 is about 5373.7335252132. The cubic root of 28877012 is about 306.7967474825.

The spelling of 28877012 in words is "twenty-eight million, eight hundred seventy-seven thousand, twelve".