195206780 has 12 divisors (see below), whose sum is σ = 409934280. Its totient is φ = 78082704.

The previous prime is 195206749. The next prime is 195206789. The reversal of 195206780 is 87602591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195206789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4880150 + ... + 4880189.

It is an arithmetic number, because the mean of its divisors is an integer number (34161190).

Almost surely, 2^195206780 is an apocalyptic number.

195206780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195206780 is an abundant number, since it is smaller than the sum of its proper divisors (214727500).

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

195206780 is a wasteful number, since it uses less digits than its factorization.

195206780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760348 (or 9760346 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 195206780 is about 13971.6419936957. The cubic root of 195206780 is about 580.0939007699.

The spelling of 195206780 in words is "one hundred ninety-five million, two hundred six thousand, seven hundred eighty".