9412640 has 48 divisors (see below), whose sum is σ = 22521240. Its totient is φ = 3717120.

The previous prime is 9412631. The next prime is 9412649. The reversal of 9412640 is 462149.

It is an interprime number because it is at equal distance from previous prime (9412631) and next prime (9412649).

It can be written as a sum of positive squares in 4 ways, for example, as 7463824 + 1948816 = 2732^2 + 1396^2 .

It is not an unprimeable number, because it can be changed into a prime (9412649) 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, 13910 + ... + 14570.

Almost surely, 2^9412640 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 9412640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11260620).

9412640 is an abundant number, since it is smaller than the sum of its proper divisors (13108600).

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

9412640 is a wasteful number, since it uses less digits than its factorization.

9412640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 9412640 is about 3068.0026075608. The cubic root of 9412640 is about 211.1399833293.

Adding to 9412640 its reverse (462149), we get a palindrome (9874789).

The spelling of 9412640 in words is "nine million, four hundred twelve thousand, six hundred forty".