921004480 has 224 divisors, whose sum is σ = 2580802560. Its totient is φ = 309473280.

The previous prime is 921004463. The next prime is 921004507. The reversal of 921004480 is 84400129.

921004480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3143214 + ... + 3143506.

It is an arithmetic number, because the mean of its divisors is an integer number (11521440).

Almost surely, 2^921004480 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 921004480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290401280).

921004480 is an abundant number, since it is smaller than the sum of its proper divisors (1659798080).

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

921004480 is a wasteful number, since it uses less digits than its factorization.

921004480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 921004480 is about 30348.0556214068. The cubic root of 921004480 is about 972.9426634246.

It can be divided in two parts, 92100 and 4480, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 921004480 in words is "nine hundred twenty-one million, four thousand, four hundred eighty".