195939760 has 80 divisors (see below), whose sum is σ = 481469184. Its totient is φ = 74007296.

The previous prime is 195939749. The next prime is 195939763. The reversal of 195939760 is 67939591.

195939760 = T₂₂₉ + T₂₃₀ + ... + T₁₀₅₈.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (195939763) 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, 152079 + ... + 153361.

Almost surely, 2^195939760 is an apocalyptic number.

195939760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195939760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240734592).

195939760 is an abundant number, since it is smaller than the sum of its proper divisors (285529424).

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

195939760 is a wasteful number, since it uses less digits than its factorization.

195939760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 195939760 is about 13997.8484060944. The cubic root of 195939760 is about 580.8190568414.

The spelling of 195939760 in words is "one hundred ninety-five million, nine hundred thirty-nine thousand, seven hundred sixty".