28645476 has 24 divisors (see below), whose sum is σ = 70771680. Its totient is φ = 8986752.

The previous prime is 28645469. The next prime is 28645489. The reversal of 28645476 is 67454682.

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 in 7 ways as a sum of consecutive naturals, for example, 70006 + ... + 70413.

It is an arithmetic number, because the mean of its divisors is an integer number (2948820).

Almost surely, 2^28645476 is an apocalyptic number.

It is an amenable number.

28645476 is an abundant number, since it is smaller than the sum of its proper divisors (42126204).

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

28645476 is a wasteful number, since it uses less digits than its factorization.

28645476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140443 (or 140441 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 28645476 is about 5352.1468589716. The cubic root of 28645476 is about 305.9745803140.

The spelling of 28645476 in words is "twenty-eight million, six hundred forty-five thousand, four hundred seventy-six".