191796220 has 48 divisors (see below), whose sum is σ = 502161408. Its totient is φ = 59780160.

The previous prime is 191796217. The next prime is 191796221. The reversal of 191796220 is 22697191.

191796220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 191796220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191796221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60732 + ... + 63811.

It is an arithmetic number, because the mean of its divisors is an integer number (10461696).

Almost surely, 2^191796220 is an apocalyptic number.

191796220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191796220 is an abundant number, since it is smaller than the sum of its proper divisors (310365188).

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

191796220 is a wasteful number, since it uses less digits than its factorization.

191796220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124570 (or 124568 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 191796220 is about 13849.0512310411. The cubic root of 191796220 is about 576.6956575280.

The spelling of 191796220 in words is "one hundred ninety-one million, seven hundred ninety-six thousand, two hundred twenty".