9421920 has 120 divisors (see below), whose sum is σ = 33297264. Its totient is φ = 2509056.

The previous prime is 9421903. The next prime is 9421921. The reversal of 9421920 is 291249.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12597 + ... + 13323.

Almost surely, 2^9421920 is an apocalyptic number.

9421920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9421920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16648632).

9421920 is an abundant number, since it is smaller than the sum of its proper divisors (23875344).

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

9421920 is a wasteful number, since it uses less digits than its factorization.

9421920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 9421920 is about 3069.5146196101. The cubic root of 9421920 is about 211.2093487597.

The spelling of 9421920 in words is "nine million, four hundred twenty-one thousand, nine hundred twenty".