196751640 has 32 divisors (see below), whose sum is σ = 590255280. Its totient is φ = 52467072.

The previous prime is 196751629. The next prime is 196751647. The reversal of 196751640 is 46157691.

It is a super-2 number, since 2×196751640² = 77422415685379200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196751647) 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 7 ways as a sum of consecutive naturals, for example, 819679 + ... + 819918.

Almost surely, 2^196751640 is an apocalyptic number.

196751640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196751640 is an abundant number, since it is smaller than the sum of its proper divisors (393503640).

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

196751640 is a wasteful number, since it uses less digits than its factorization.

196751640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639611 (or 1639607 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 196751640 is about 14026.8185986702. The cubic root of 196751640 is about 581.6201628745.

The spelling of 196751640 in words is "one hundred ninety-six million, seven hundred fifty-one thousand, six hundred forty".