195201840 has 80 divisors (see below), whose sum is σ = 607961088. Its totient is φ = 51810048.

The previous prime is 195201833. The next prime is 195201859. The reversal of 195201840 is 48102591.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 195201798 and 195201807.

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, 52689 + ... + 56271.

Almost surely, 2^195201840 is an apocalyptic number.

195201840 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 195201840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303980544).

195201840 is an abundant number, since it is smaller than the sum of its proper divisors (412759248).

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

195201840 is a wasteful number, since it uses less digits than its factorization.

195201840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 195201840 is about 13971.4652059117. The cubic root of 195201840 is about 580.0890073469.

The spelling of 195201840 in words is "one hundred ninety-five million, two hundred one thousand, eight hundred forty".