196021830 has 32 divisors (see below), whose sum is σ = 470932704. Its totient is φ = 52219136.

The previous prime is 196021823. The next prime is 196021843. The reversal of 196021830 is 38120691.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33052 + ... + 38528.

It is an arithmetic number, because the mean of its divisors is an integer number (14716647).

Almost surely, 2^196021830 is an apocalyptic number.

196021830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196021830 is an abundant number, since it is smaller than the sum of its proper divisors (274910874).

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

196021830 is a wasteful number, since it uses less digits than its factorization.

196021830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 196021830 is about 14000.7796211497. The cubic root of 196021830 is about 580.9001381668.

The spelling of 196021830 in words is "one hundred ninety-six million, twenty-one thousand, eight hundred thirty".