28726306 has 32 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 11927616.

The previous prime is 28726283. The next prime is 28726307. The reversal of 28726306 is 60362782.

It is not an unprimeable number, because it can be changed into a prime (28726307) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 97896 + ... + 98188.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^28726306 is an apocalyptic number.

28726306 is a deficient number, since it is larger than the sum of its proper divisors (22076894).

28726306 is a wasteful number, since it uses less digits than its factorization.

28726306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 28726306 is about 5359.6927150724. The cubic root of 28726306 is about 306.2621033117.

The spelling of 28726306 in words is "twenty-eight million, seven hundred twenty-six thousand, three hundred six".