190242858 has 64 divisors (see below), whose sum is σ = 434931840. Its totient is φ = 54991872.

The previous prime is 190242851. The next prime is 190242881. The reversal of 190242858 is 858242091.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190242851) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 202566 + ... + 203502.

It is an arithmetic number, because the mean of its divisors is an integer number (6795810).

Almost surely, 2^190242858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190242858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217465920).

190242858 is an abundant number, since it is smaller than the sum of its proper divisors (244688982).

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

190242858 is a wasteful number, since it uses less digits than its factorization.

190242858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 190242858 is about 13792.8553244062. The cubic root of 190242858 is about 575.1345449487.

The spelling of 190242858 in words is "one hundred ninety million, two hundred forty-two thousand, eight hundred fifty-eight".