197748240 has 80 divisors (see below), whose sum is σ = 621472128. Its totient is φ = 52005888.

The previous prime is 197748193. The next prime is 197748259. The reversal of 197748240 is 42847791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 197748192 and 197748201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11877 + ... + 23163.

Almost surely, 2^197748240 is an apocalyptic number.

197748240 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 197748240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310736064).

197748240 is an abundant number, since it is smaller than the sum of its proper divisors (423723888).

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

197748240 is a wasteful number, since it uses less digits than its factorization.

197748240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376 (or 11370 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 197748240 is about 14062.2985318902. The cubic root of 197748240 is about 582.6005303352.

The spelling of 197748240 in words is "one hundred ninety-seven million, seven hundred forty-eight thousand, two hundred forty".