195864720 has 40 divisors (see below), whose sum is σ = 607181376. Its totient is φ = 52230528.

The previous prime is 195864707. The next prime is 195864731. The reversal of 195864720 is 27468591.

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

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, 407812 + ... + 408291.

Almost surely, 2^195864720 is an apocalyptic number.

195864720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195864720 is an abundant number, since it is smaller than the sum of its proper divisors (411316656).

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

195864720 is a wasteful number, since it uses less digits than its factorization.

195864720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816119 (or 816113 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 195864720 is about 13995.1677374728. The cubic root of 195864720 is about 580.7449010105.

The spelling of 195864720 in words is "one hundred ninety-five million, eight hundred sixty-four thousand, seven hundred twenty".