195977712 has 40 divisors (see below), whose sum is σ = 578601856. Its totient is φ = 55993536.

The previous prime is 195977711. The next prime is 195977833. The reversal of 195977712 is 217779591.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195977711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291298 + ... + 291969.

Almost surely, 2^195977712 is an apocalyptic number.

195977712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195977712 is an abundant number, since it is smaller than the sum of its proper divisors (382624144).

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

195977712 is a wasteful number, since it uses less digits than its factorization.

195977712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583285 (or 583279 counting only the distinct ones).

The product of its digits is 277830, while the sum is 48.

The square root of 195977712 is about 13999.2039773696. The cubic root of 195977712 is about 580.8565544577.

The spelling of 195977712 in words is "one hundred ninety-five million, nine hundred seventy-seven thousand, seven hundred twelve".