199712382 has 64 divisors (see below), whose sum is σ = 434903040. Its totient is φ = 60933600.

The previous prime is 199712377. The next prime is 199712393. The reversal of 199712382 is 283217991.

It is a super-2 number, since 2×199712382² = 79770071048227848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642007 + ... + 642317.

It is an arithmetic number, because the mean of its divisors is an integer number (6795360).

Almost surely, 2^199712382 is an apocalyptic number.

199712382 is an abundant number, since it is smaller than the sum of its proper divisors (235190658).

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

199712382 is a wasteful number, since it uses less digits than its factorization.

199712382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 54432, while the sum is 42.

The square root of 199712382 is about 14131.9631332664. The cubic root of 199712382 is about 584.5230797756.

The spelling of 199712382 in words is "one hundred ninety-nine million, seven hundred twelve thousand, three hundred eighty-two".