912120872 has 32 divisors (see below), whose sum is σ = 1844973480. Its totient is φ = 420249600.

The previous prime is 912120863. The next prime is 912120877. The reversal of 912120872 is 278021219.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 581099236 + 331021636 = 24106^2 + 18194^2 .

It is not an unprimeable number, because it can be changed into a prime (912120877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55208 + ... + 69800.

Almost surely, 2^912120872 is an apocalyptic number.

It is an amenable number.

912120872 is an abundant number, since it is smaller than the sum of its proper divisors (932852608).

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

912120872 is a wasteful number, since it uses less digits than its factorization.

912120872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15213 (or 15209 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 912120872 is about 30201.3389107172. The cubic root of 912120872 is about 969.8043577513.

The spelling of 912120872 in words is "nine hundred twelve million, one hundred twenty thousand, eight hundred seventy-two".