28245546 has 24 divisors (see below), whose sum is σ = 69941664. Its totient is φ = 8070120.

The previous prime is 28245521. The next prime is 28245563. The reversal of 28245546 is 64554282.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28245546.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111960 + ... + 112211.

It is an arithmetic number, because the mean of its divisors is an integer number (2914236).

Almost surely, 2^28245546 is an apocalyptic number.

28245546 is an abundant number, since it is smaller than the sum of its proper divisors (41696118).

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

28245546 is a wasteful number, since it uses less digits than its factorization.

28245546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224186 (or 224183 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 28245546 is about 5314.6538927761. The cubic root of 28245546 is about 304.5439605859.

The spelling of 28245546 in words is "twenty-eight million, two hundred forty-five thousand, five hundred forty-six".