197886402 has 120 divisors (see below), whose sum is σ = 523151244. Its totient is φ = 55738368.

The previous prime is 197886383. The next prime is 197886407. The reversal of 197886402 is 204688791.

It can be written as a sum of positive squares in 2 ways, for example, as 180069561 + 17816841 = 13419^2 + 4221^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197886407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 769858 + ... + 770114.

Almost surely, 2^197886402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197886402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261575622).

197886402 is an abundant number, since it is smaller than the sum of its proper divisors (325264842).

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

197886402 is a wasteful number, since it uses less digits than its factorization.

197886402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 197886402 is about 14067.2101711747. The cubic root of 197886402 is about 582.7361818004.

The spelling of 197886402 in words is "one hundred ninety-seven million, eight hundred eighty-six thousand, four hundred two".