197481040 has 40 divisors (see below), whose sum is σ = 464970240. Its totient is φ = 77990016.

The previous prime is 197481029. The next prime is 197481043. The reversal of 197481040 is 40184791.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×197481040² = 77997522318963200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197480987 and 197481005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197481043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9304 + ... + 21943.

It is an arithmetic number, because the mean of its divisors is an integer number (11624256).

Almost surely, 2^197481040 is an apocalyptic number.

197481040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197481040 is an abundant number, since it is smaller than the sum of its proper divisors (267489200).

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

197481040 is a wasteful number, since it uses less digits than its factorization.

197481040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31339 (or 31333 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 197481040 is about 14052.7947398373. The cubic root of 197481040 is about 582.3380062470.

The spelling of 197481040 in words is "one hundred ninety-seven million, four hundred eighty-one thousand, forty".