28263546 has 32 divisors (see below), whose sum is σ = 63019200. Its totient is φ = 9389520.

The previous prime is 28263539. The next prime is 28263551. The reversal of 28263546 is 64536282.

It is a self number, because there is not a number n which added to its sum of digits gives 28263546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19776 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (1969350).

Almost surely, 2^28263546 is an apocalyptic number.

28263546 is an abundant number, since it is smaller than the sum of its proper divisors (34755654).

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

28263546 is a wasteful number, since it uses less digits than its factorization.

28263546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1765 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 28263546 is about 5316.3470541341. The cubic root of 28263546 is about 304.6086389514.

The spelling of 28263546 in words is "twenty-eight million, two hundred sixty-three thousand, five hundred forty-six".