197497872 has 320 divisors, whose sum is σ = 699955200. Its totient is φ = 52462080.

The previous prime is 197497871. The next prime is 197497873. The reversal of 197497872 is 278794791.

It is an interprime number because it is at equal distance from previous prime (197497871) and next prime (197497873).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (197497871) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1420779 + ... + 1420917.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^197497872 is an apocalyptic number.

197497872 is a gapful number since it is divisible by the number (12) 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 197497872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349977600).

197497872 is an abundant number, since it is smaller than the sum of its proper divisors (502457328).

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

197497872 is a wasteful number, since it uses less digits than its factorization.

197497872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 191 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 197497872 is about 14053.3936115089. The cubic root of 197497872 is about 582.3545506789.

The spelling of 197497872 in words is "one hundred ninety-seven million, four hundred ninety-seven thousand, eight hundred seventy-two".