199345740 has 192 divisors, whose sum is σ = 654635520. Its totient is φ = 44789760.

The previous prime is 199345709. The next prime is 199345763. The reversal of 199345740 is 47543991.

199345740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199345740² = 79477448112295200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 199345692 and 199345701.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1222899 + ... + 1223061.

It is an arithmetic number, because the mean of its divisors is an integer number (3409560).

Almost surely, 2^199345740 is an apocalyptic number.

199345740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199345740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327317760).

199345740 is an abundant number, since it is smaller than the sum of its proper divisors (455289780).

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

199345740 is a wasteful number, since it uses less digits than its factorization.

199345740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 199345740 is about 14118.9850910042. The cubic root of 199345740 is about 584.1651617366.

The spelling of 199345740 in words is "one hundred ninety-nine million, three hundred forty-five thousand, seven hundred forty".