199608240 has 80 divisors (see below), whose sum is σ = 666394848. Its totient is φ = 49133568.

The previous prime is 199608239. The next prime is 199608251. The reversal of 199608240 is 42806991.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 28869 + ... + 35108.

Almost surely, 2^199608240 is an apocalyptic number.

199608240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199608240 is an abundant number, since it is smaller than the sum of its proper divisors (466786608).

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

199608240 is a wasteful number, since it uses less digits than its factorization.

199608240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64006 (or 64000 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 199608240 is about 14128.2780267094. The cubic root of 199608240 is about 584.4214603266.

The spelling of 199608240 in words is "one hundred ninety-nine million, six hundred eight thousand, two hundred forty".