194728258 has 16 divisors (see below), whose sum is σ = 305807040. Its totient is φ = 92820816.

The previous prime is 194728231. The next prime is 194728273. The reversal of 194728258 is 852827491.

It is a Harshad number since it is a multiple of its sum of digits (46).

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 7 ways as a sum of consecutive naturals, for example, 7228 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (19112940).

Almost surely, 2^194728258 is an apocalyptic number.

194728258 is a deficient number, since it is larger than the sum of its proper divisors (111078782).

194728258 is a wasteful number, since it uses less digits than its factorization.

194728258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14121.

The product of its digits is 322560, while the sum is 46.

The square root of 194728258 is about 13954.5067272190. The cubic root of 194728258 is about 579.6195066848.

It can be divided in two parts, 19472 and 8258, that added together give a triangular number (27730 = T₂₃₅).

The spelling of 194728258 in words is "one hundred ninety-four million, seven hundred twenty-eight thousand, two hundred fifty-eight".