9123920 has 80 divisors (see below), whose sum is σ = 23665152. Its totient is φ = 3248640.

The previous prime is 9123901. The next prime is 9123923. The reversal of 9123920 is 293219.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 9123920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9123923) 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, 32099 + ... + 32381.

Almost surely, 2^9123920 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 9123920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11832576).

9123920 is an abundant number, since it is smaller than the sum of its proper divisors (14541232).

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

9123920 is a wasteful number, since it uses less digits than its factorization.

9123920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9123920 is about 3020.5827252370. The cubic root of 9123920 is about 208.9587153178.

The spelling of 9123920 in words is "nine million, one hundred twenty-three thousand, nine hundred twenty".