191352940 has 12 divisors (see below), whose sum is σ = 401841216. Its totient is φ = 76541168.

The previous prime is 191352923. The next prime is 191352947. The reversal of 191352940 is 49253191.

It is a junction number, because it is equal to n+sod(n) for n = 191352896 and 191352905.

It is not an unprimeable number, because it can be changed into a prime (191352947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783804 + ... + 4783843.

It is an arithmetic number, because the mean of its divisors is an integer number (33486768).

Almost surely, 2^191352940 is an apocalyptic number.

191352940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191352940 is an abundant number, since it is smaller than the sum of its proper divisors (210488276).

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

191352940 is a wasteful number, since it uses less digits than its factorization.

191352940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9567656 (or 9567654 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 191352940 is about 13833.0379888150. The cubic root of 191352940 is about 576.2510278966.

The spelling of 191352940 in words is "one hundred ninety-one million, three hundred fifty-two thousand, nine hundred forty".