2923920 has 120 divisors (see below), whose sum is σ = 10213632. Its totient is φ = 748800.

The previous prime is 2923903. The next prime is 2923927. The reversal of 2923920 is 293292.

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

It is not an unprimeable number, because it can be changed into a prime (2923927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22255 + ... + 22385.

2^2923920 is an apocalyptic number.

2923920 is a gapful number since it is divisible by the number (20) 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 2923920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5106816).

2923920 is an abundant number, since it is smaller than the sum of its proper divisors (7289712).

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

2923920 is a wasteful number, since it uses less digits than its factorization.

With its successor (2923921) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (181).

2923920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2923920 is about 1709.9473676111. The cubic root of 2923920 is about 142.9953215416.

The spelling of 2923920 in words is "two million, nine hundred twenty-three thousand, nine hundred twenty".