912640 has 72 divisors (see below), whose sum is σ = 2354688. Its totient is φ = 337920.

The previous prime is 912631. The next prime is 912647. The reversal of 912640 is 46219.

912640 = T₉₁ + T₉₂ + ... + T₁₈₃.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912647) 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, 29425 + ... + 29455.

It is an arithmetic number, because the mean of its divisors is an integer number (32704).

2⁹¹²⁶⁴⁰ 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 912640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177344).

912640 is an abundant number, since it is smaller than the sum of its proper divisors (1442048).

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

912640 is a wasteful number, since it uses less digits than its factorization.

912640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 912640 is about 955.3219352658. The cubic root of 912640 is about 96.9988308925.

Adding to 912640 its reverse (46219), we get a palindrome (958859).

The spelling of 912640 in words is "nine hundred twelve thousand, six hundred forty".