28361858 has 16 divisors (see below), whose sum is σ = 48718464. Its totient is φ = 12130560.

The previous prime is 28361857. The next prime is 28361863. The reversal of 28361858 is 85816382.

It is not an unprimeable number, because it can be changed into a prime (28361857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6323 + ... + 9833.

It is an arithmetic number, because the mean of its divisors is an integer number (3044904).

Almost surely, 2^28361858 is an apocalyptic number.

28361858 is a deficient number, since it is larger than the sum of its proper divisors (20356606).

28361858 is a wasteful number, since it uses less digits than its factorization.

28361858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097.

The product of its digits is 92160, while the sum is 41.

The square root of 28361858 is about 5325.5852260573. The cubic root of 28361858 is about 304.9614140921.

The spelling of 28361858 in words is "twenty-eight million, three hundred sixty-one thousand, eight hundred fifty-eight".