195605240 has 64 divisors (see below), whose sum is σ = 448493760. Its totient is φ = 76769280.

The previous prime is 195605231. The next prime is 195605243. The reversal of 195605240 is 42506591.

195605240 = 1524² + 1525² + ... + 1603².

It is a happy number.

It is a super-2 number, since 2×195605240² = 76522819830915200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 195605197 and 195605206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195605243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811520 + ... + 811760.

It is an arithmetic number, because the mean of its divisors is an integer number (7007715).

Almost surely, 2^195605240 is an apocalyptic number.

195605240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195605240 is an abundant number, since it is smaller than the sum of its proper divisors (252888520).

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

195605240 is a wasteful number, since it uses less digits than its factorization.

195605240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 195605240 is about 13985.8943224951. The cubic root of 195605240 is about 580.4883322914.

The spelling of 195605240 in words is "one hundred ninety-five million, six hundred five thousand, two hundred forty".