28746858 has 32 divisors (see below), whose sum is σ = 67829760. Its totient is φ = 7948080.

The previous prime is 28746811. The next prime is 28746869. The reversal of 28746858 is 85864782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9738 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (2119680).

Almost surely, 2^28746858 is an apocalyptic number.

28746858 is an abundant number, since it is smaller than the sum of its proper divisors (39082902).

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

28746858 is a wasteful number, since it uses less digits than its factorization.

28746858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22122.

The product of its digits is 860160, while the sum is 48.

The square root of 28746858 is about 5361.6096463655. The cubic root of 28746858 is about 306.3351234705.

The spelling of 28746858 in words is "twenty-eight million, seven hundred forty-six thousand, eight hundred fifty-eight".