197420398 has 32 divisors (see below), whose sum is σ = 347618304. Its totient is φ = 82334112.

The previous prime is 197420387. The next prime is 197420401. The reversal of 197420398 is 893024791.

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, 128865 + ... + 130387.

It is an arithmetic number, because the mean of its divisors is an integer number (10863072).

Almost surely, 2^197420398 is an apocalyptic number.

197420398 is a deficient number, since it is larger than the sum of its proper divisors (150197906).

197420398 is a wasteful number, since it uses less digits than its factorization.

197420398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 197420398 is about 14050.6369250650. The cubic root of 197420398 is about 582.2783924958.

The spelling of 197420398 in words is "one hundred ninety-seven million, four hundred twenty thousand, three hundred ninety-eight".