199270640 has 40 divisors (see below), whose sum is σ = 465669600. Its totient is φ = 79301376.

The previous prime is 199270637. The next prime is 199270679. The reversal of 199270640 is 46072991.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 199270594 and 199270603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9662 + ... + 22178.

It is an arithmetic number, because the mean of its divisors is an integer number (11641740).

Almost surely, 2^199270640 is an apocalyptic number.

199270640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199270640 is an abundant number, since it is smaller than the sum of its proper divisors (266398960).

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

199270640 is a wasteful number, since it uses less digits than its factorization.

199270640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12729 (or 12723 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 199270640 is about 14116.3253008706. The cubic root of 199270640 is about 584.0917945405.

The spelling of 199270640 in words is "one hundred ninety-nine million, two hundred seventy thousand, six hundred forty".