197752738 has 8 divisors (see below), whose sum is σ = 314077932. Its totient is φ = 93060096.

The previous prime is 197752697. The next prime is 197752739. The reversal of 197752738 is 837257791.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190798969 + 6953769 = 13813^2 + 2637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×197752738² = 78212290772993288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197752691 and 197752700.

It is not an unprimeable number, because it can be changed into a prime (197752739) 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, 2908095 + ... + 2908162.

Almost surely, 2^197752738 is an apocalyptic number.

197752738 is a deficient number, since it is larger than the sum of its proper divisors (116325194).

197752738 is a wasteful number, since it uses less digits than its factorization.

197752738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816276.

The product of its digits is 740880, while the sum is 49.

The square root of 197752738 is about 14062.4584621609. The cubic root of 197752738 is about 582.6049475971.

The spelling of 197752738 in words is "one hundred ninety-seven million, seven hundred fifty-two thousand, seven hundred thirty-eight".