971782940 has 12 divisors (see below), whose sum is σ = 2040744216. Its totient is φ = 388713168.

The previous prime is 971782939. The next prime is 971782961. The reversal of 971782940 is 49287179.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24294554 + ... + 24294593.

It is an arithmetic number, because the mean of its divisors is an integer number (170062018).

Almost surely, 2^971782940 is an apocalyptic number.

It is an amenable number.

971782940 is an abundant number, since it is smaller than the sum of its proper divisors (1068961276).

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

971782940 is a wasteful number, since it uses less digits than its factorization.

971782940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48589156 (or 48589154 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 971782940 is about 31173.4332405014. The cubic root of 971782940 is about 990.5044329312.

The spelling of 971782940 in words is "nine hundred seventy-one million, seven hundred eighty-two thousand, nine hundred forty".