195143040 has 256 divisors, whose sum is σ = 722649600. Its totient is φ = 49674240.

The previous prime is 195143029. The next prime is 195143057. The reversal of 195143040 is 40341591.

195143040 is a `hidden beast` number, since 195 + 1 + 430 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 195142995 and 195143013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397195 + ... + 397685.

It is an arithmetic number, because the mean of its divisors is an integer number (2822850).

Almost surely, 2^195143040 is an apocalyptic number.

195143040 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 195143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361324800).

195143040 is an abundant number, since it is smaller than the sum of its proper divisors (527506560).

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

195143040 is a wasteful number, since it uses less digits than its factorization.

195143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 195143040 is about 13969.3607584599. The cubic root of 195143040 is about 580.0307554044.

The spelling of 195143040 in words is "one hundred ninety-five million, one hundred forty-three thousand, forty".