195989024 has 108 divisors (see below), whose sum is σ = 493841502. Its totient is φ = 76285440.

The previous prime is 195989023. The next prime is 195989063. The reversal of 195989024 is 420989591.

It can be written as a sum of positive squares in only one way, i.e., 116208400 + 79780624 = 10780^2 + 8932^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 195989024.

It is not an unprimeable number, because it can be changed into a prime (195989023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 189212 + ... + 190244.

Almost surely, 2^195989024 is an apocalyptic number.

195989024 is a gapful number since it is divisible by the number (14) 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 195989024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246920751).

195989024 is an abundant number, since it is smaller than the sum of its proper divisors (297852478).

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

195989024 is a wasteful number, since it uses less digits than its factorization.

195989024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 195989024 is about 13999.6079945118. The cubic root of 195989024 is about 580.8677300873.

The spelling of 195989024 in words is "one hundred ninety-five million, nine hundred eighty-nine thousand, twenty-four".