195731040 has 96 divisors (see below), whose sum is σ = 618680160. Its totient is φ = 52015104.

The previous prime is 195731023. The next prime is 195731057. The reversal of 195731040 is 40137591.

195731040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195731023) and next prime (195731057).

It is a tau number, because it is divible by the number of its divisors (96).

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 = 195730989 and 195731007.

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, 195822 + ... + 196818.

It is an arithmetic number, because the mean of its divisors is an integer number (6444585).

Almost surely, 2^195731040 is an apocalyptic number.

195731040 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 195731040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309340080).

195731040 is an abundant number, since it is smaller than the sum of its proper divisors (422949120).

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

195731040 is a wasteful number, since it uses less digits than its factorization.

195731040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 195731040 is about 13990.3909881032. The cubic root of 195731040 is about 580.6127491744.

The spelling of 195731040 in words is "one hundred ninety-five million, seven hundred thirty-one thousand, forty".