197239896 has 144 divisors (see below), whose sum is σ = 638623440. Its totient is φ = 54794880.

The previous prime is 197239877. The next prime is 197239907. The reversal of 197239896 is 698932791.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 129781 + ... + 131291.

It is an arithmetic number, because the mean of its divisors is an integer number (4434885).

Almost surely, 2^197239896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197239896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319311720).

197239896 is an abundant number, since it is smaller than the sum of its proper divisors (441383544).

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

197239896 is a wasteful number, since it uses less digits than its factorization.

197239896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1560 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 197239896 is about 14044.2121886562. The cubic root of 197239896 is about 582.1008788185.

It can be divided in two parts, 197239 and 896, that added together give a triangular number (198135 = T₆₂₉).

The spelling of 197239896 in words is "one hundred ninety-seven million, two hundred thirty-nine thousand, eight hundred ninety-six".