199282540 has 24 divisors (see below), whose sum is σ = 419161680. Its totient is φ = 79585728.

The previous prime is 199282453. The next prime is 199282541. The reversal of 199282540 is 45282991.

It is a junction number, because it is equal to n+sod(n) for n = 199282493 and 199282502.

It is not an unprimeable number, because it can be changed into a prime (199282541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5431 + ... + 20689.

It is an arithmetic number, because the mean of its divisors is an integer number (17465070).

Almost surely, 2^199282540 is an apocalyptic number.

199282540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199282540 is an abundant number, since it is smaller than the sum of its proper divisors (219879140).

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

199282540 is a wasteful number, since it uses less digits than its factorization.

199282540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15921 (or 15919 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 199282540 is about 14116.7467923739. The cubic root of 199282540 is about 584.1034211973.

The spelling of 199282540 in words is "one hundred ninety-nine million, two hundred eighty-two thousand, five hundred forty".