28727476 has 6 divisors (see below), whose sum is σ = 50273090. Its totient is φ = 14363736.

The previous prime is 28727459. The next prime is 28727519. The reversal of 28727476 is 67472782.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 104976 = 5350^2 + 324^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3590931 + ... + 3590938.

Almost surely, 2^28727476 is an apocalyptic number.

It is an amenable number.

28727476 is a deficient number, since it is larger than the sum of its proper divisors (21545614).

28727476 is a wasteful number, since it uses less digits than its factorization.

28727476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7181873 (or 7181871 counting only the distinct ones).

The product of its digits is 263424, while the sum is 43.

The square root of 28727476 is about 5359.8018620095. The cubic root of 28727476 is about 306.2662611940.

The spelling of 28727476 in words is "twenty-eight million, seven hundred twenty-seven thousand, four hundred seventy-six".