28635312 has 20 divisors (see below), whose sum is σ = 73974680. Its totient is φ = 9545088.

The previous prime is 28635311. The next prime is 28635389. The reversal of 28635312 is 21353682.

It is a self number, because there is not a number n which added to its sum of digits gives 28635312.

It is not an unprimeable number, because it can be changed into a prime (28635311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298237 + ... + 298332.

It is an arithmetic number, because the mean of its divisors is an integer number (3698734).

Almost surely, 2^28635312 is an apocalyptic number.

It is an amenable number.

28635312 is an abundant number, since it is smaller than the sum of its proper divisors (45339368).

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

28635312 is a wasteful number, since it uses less digits than its factorization.

28635312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596580 (or 596574 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 28635312 is about 5351.1972492144. The cubic root of 28635312 is about 305.9383873560.

Adding to 28635312 its reverse (21353682), we get a palindrome (49988994).

The spelling of 28635312 in words is "twenty-eight million, six hundred thirty-five thousand, three hundred twelve".