71776940 has 12 divisors (see below), whose sum is σ = 150731616. Its totient is φ = 28710768.

The previous prime is 71776919. The next prime is 71776967. The reversal of 71776940 is 4967717.

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 3 ways as a sum of consecutive naturals, for example, 1794404 + ... + 1794443.

It is an arithmetic number, because the mean of its divisors is an integer number (12560968).

Almost surely, 2^71776940 is an apocalyptic number.

It is an amenable number.

71776940 is an abundant number, since it is smaller than the sum of its proper divisors (78954676).

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

71776940 is a wasteful number, since it uses less digits than its factorization.

71776940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588856 (or 3588854 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 71776940 is about 8472.1272417262. The cubic root of 71776940 is about 415.5867058392.

The spelling of 71776940 in words is "seventy-one million, seven hundred seventy-six thousand, nine hundred forty".