197498840 has 64 divisors (see below), whose sum is σ = 554031360. Its totient is φ = 61557120.

The previous prime is 197498839. The next prime is 197498857. The reversal of 197498840 is 48894791.

It is a congruent number.

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, 28982 + ... + 35141.

It is an arithmetic number, because the mean of its divisors is an integer number (8656740).

Almost surely, 2^197498840 is an apocalyptic number.

197498840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197498840 is an abundant number, since it is smaller than the sum of its proper divisors (356532520).

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

197498840 is a wasteful number, since it uses less digits than its factorization.

197498840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64152 (or 64148 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 197498840 is about 14053.4280515467. The cubic root of 197498840 is about 582.3555021124.

The spelling of 197498840 in words is "one hundred ninety-seven million, four hundred ninety-eight thousand, eight hundred forty".