197904872424 has 128 divisors (see below), whose sum is σ = 569066342400. Its totient is φ = 56182775040.

The previous prime is 197904872383. The next prime is 197904872437. The reversal of 197904872424 is 424278409791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22930542 + ... + 22939170.

It is an arithmetic number, because the mean of its divisors is an integer number (4445830800).

Almost surely, 2^197904872424 is an apocalyptic number.

197904872424 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 197904872424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284533171200).

197904872424 is an abundant number, since it is smaller than the sum of its proper divisors (371161469976).

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

197904872424 is a wasteful number, since it uses less digits than its factorization.

197904872424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503 (or 9499 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 197904872424 in words is "one hundred ninety-seven billion, nine hundred four million, eight hundred seventy-two thousand, four hundred twenty-four".