199492240 has 20 divisors (see below), whose sum is σ = 463819644. Its totient is φ = 79796864.

The previous prime is 199492231. The next prime is 199492253. The reversal of 199492240 is 42294991.

It can be written as a sum of positive squares in 2 ways, for example, as 150994944 + 48497296 = 12288^2 + 6964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 199492193 and 199492202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246747 + ... + 1246906.

Almost surely, 2^199492240 is an apocalyptic number.

199492240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199492240 is an abundant number, since it is smaller than the sum of its proper divisors (264327404).

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

199492240 is a wasteful number, since it uses less digits than its factorization.

199492240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493666 (or 2493660 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 199492240 is about 14124.1721881319. The cubic root of 199492240 is about 584.3082284848.

The spelling of 199492240 in words is "one hundred ninety-nine million, four hundred ninety-two thousand, two hundred forty".