195812736 has 128 divisors (see below), whose sum is σ = 601359360. Its totient is φ = 55296000.

The previous prime is 195812717. The next prime is 195812759. The reversal of 195812736 is 637218591.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260361 + ... + 261111.

It is an arithmetic number, because the mean of its divisors is an integer number (4698120).

Almost surely, 2^195812736 is an apocalyptic number.

195812736 is a gapful number since it is divisible by the number (16) 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 195812736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300679680).

195812736 is an abundant number, since it is smaller than the sum of its proper divisors (405546624).

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

195812736 is an equidigital number, since it uses as much as digits as its factorization.

195812736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 860 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 195812736 is about 13993.3104017598. The cubic root of 195812736 is about 580.6935184131.

The spelling of 195812736 in words is "one hundred ninety-five million, eight hundred twelve thousand, seven hundred thirty-six".