196881540 has 24 divisors (see below), whose sum is σ = 551268480. Its totient is φ = 52501728.

The previous prime is 196881523. The next prime is 196881599. The reversal of 196881540 is 45188691.

It is a junction number, because it is equal to n+sod(n) for n = 196881492 and 196881501.

It is an unprimeable number.

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, 1640620 + ... + 1640739.

It is an arithmetic number, because the mean of its divisors is an integer number (22969520).

Almost surely, 2^196881540 is an apocalyptic number.

196881540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196881540 is an abundant number, since it is smaller than the sum of its proper divisors (354386940).

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

196881540 is a wasteful number, since it uses less digits than its factorization.

196881540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281371 (or 3281369 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 196881540 is about 14031.4482502698. The cubic root of 196881540 is about 581.7481344263.

The spelling of 196881540 in words is "one hundred ninety-six million, eight hundred eighty-one thousand, five hundred forty".