921682240 has 112 divisors (see below), whose sum is σ = 2251618560. Its totient is φ = 359260160.

The previous prime is 921682219. The next prime is 921682241. The reversal of 921682240 is 42286129.

921682240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 921682196 and 921682205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921682241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2567181 + ... + 2567539.

Almost surely, 2^921682240 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 921682240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125809280).

921682240 is an abundant number, since it is smaller than the sum of its proper divisors (1329936320).

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

921682240 is a wasteful number, since it uses less digits than its factorization.

921682240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 921682240 is about 30359.2200163311. The cubic root of 921682240 is about 973.1812652069.

The spelling of 921682240 in words is "nine hundred twenty-one million, six hundred eighty-two thousand, two hundred forty".