28294506 has 24 divisors (see below), whose sum is σ = 63283584. Its totient is φ = 9127080.

The previous prime is 28294501. The next prime is 28294507. The reversal of 28294506 is 60549282.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28294501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24796 + ... + 25911.

It is an arithmetic number, because the mean of its divisors is an integer number (2636816).

Almost surely, 2^28294506 is an apocalyptic number.

28294506 is an abundant number, since it is smaller than the sum of its proper divisors (34989078).

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

28294506 is a wasteful number, since it uses less digits than its factorization.

28294506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50746 (or 50743 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28294506 is about 5319.2580309663. The cubic root of 28294506 is about 304.7198215337.

The spelling of 28294506 in words is "twenty-eight million, two hundred ninety-four thousand, five hundred six".