28604776 has 8 divisors (see below), whose sum is σ = 53633970. Its totient is φ = 14302384.

The previous prime is 28604773. The next prime is 28604783. The reversal of 28604776 is 67740682.

It can be written as a sum of positive squares in only one way, i.e., 19448100 + 9156676 = 4410^2 + 3026^2 .

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 (28604773) by changing a digit.

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 as a sum of consecutive naturals, namely, 1787791 + ... + 1787806.

Almost surely, 2^28604776 is an apocalyptic number.

It is an amenable number.

28604776 is a deficient number, since it is larger than the sum of its proper divisors (25029194).

28604776 is a wasteful number, since it uses less digits than its factorization.

28604776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575603 (or 3575599 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 28604776 is about 5348.3432948905. The cubic root of 28604776 is about 305.8296002600.

The spelling of 28604776 in words is "twenty-eight million, six hundred four thousand, seven hundred seventy-six".