912871720 has 64 divisors (see below), whose sum is σ = 2175624000. Its totient is φ = 343761408.

The previous prime is 912871711. The next prime is 912871721. The reversal of 912871720 is 27178219.

It is a self number, because there is not a number n which added to its sum of digits gives 912871720.

It is not an unprimeable number, because it can be changed into a prime (912871721) 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 15 ways as a sum of consecutive naturals, for example, 120196 + ... + 127564.

It is an arithmetic number, because the mean of its divisors is an integer number (33994125).

Almost surely, 2^912871720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 912871720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1087812000).

912871720 is an abundant number, since it is smaller than the sum of its proper divisors (1262752280).

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

912871720 is a wasteful number, since it uses less digits than its factorization.

912871720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562 (or 7558 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 912871720 is about 30213.7670607291. The cubic root of 912871720 is about 970.0703955713.

The spelling of 912871720 in words is "nine hundred twelve million, eight hundred seventy-one thousand, seven hundred twenty".