197891480 has 16 divisors (see below), whose sum is σ = 445255920. Its totient is φ = 79156576.

The previous prime is 197891467. The next prime is 197891483. The reversal of 197891480 is 84198791.

It is a super-2 number, since 2×197891480² = 78322075713180800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197891483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2473604 + ... + 2473683.

It is an arithmetic number, because the mean of its divisors is an integer number (27828495).

Almost surely, 2^197891480 is an apocalyptic number.

197891480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197891480 is an abundant number, since it is smaller than the sum of its proper divisors (247364440).

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

197891480 is a wasteful number, since it uses less digits than its factorization.

197891480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947298 (or 4947294 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 197891480 is about 14067.3906606734. The cubic root of 197891480 is about 582.7411663252.

The spelling of 197891480 in words is "one hundred ninety-seven million, eight hundred ninety-one thousand, four hundred eighty".