906240 has 88 divisors (see below), whose sum is σ = 2947680. Its totient is φ = 237568.

The previous prime is 906233. The next prime is 906259. The reversal of 906240 is 42609.

906240 is nontrivially palindromic in base 11.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

906240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15331 + ... + 15389.

2⁹⁰⁶²⁴⁰ 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 906240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473840).

906240 is an abundant number, since it is smaller than the sum of its proper divisors (2041440).

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

906240 is a wasteful number, since it uses less digits than its factorization.

906240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 906240 is about 951.9663859612. The cubic root of 906240 is about 96.7715600717.

Adding to 906240 its reverse (42609), we get a palindrome (948849).

The spelling of 906240 in words is "nine hundred six thousand, two hundred forty".