197738628 has 48 divisors (see below), whose sum is σ = 489633984. Its totient is φ = 61895680.

The previous prime is 197738623. The next prime is 197738647. The reversal of 197738628 is 826837791.

It is a super-3 number, since 3×197738628³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (197738623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125083 + ... + 126653.

It is an arithmetic number, because the mean of its divisors is an integer number (10200708).

Almost surely, 2^197738628 is an apocalyptic number.

It is an amenable number.

197738628 is an abundant number, since it is smaller than the sum of its proper divisors (291895356).

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

197738628 is a wasteful number, since it uses less digits than its factorization.

197738628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2210 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 197738628 is about 14061.9567628407. The cubic root of 197738628 is about 582.5910906439.

The spelling of 197738628 in words is "one hundred ninety-seven million, seven hundred thirty-eight thousand, six hundred twenty-eight".