2239920 has 160 divisors (see below), whose sum is σ = 8303040. Its totient is φ = 552960.

The previous prime is 2239889. The next prime is 2239933. The reversal of 2239920 is 299322.

2239920 is nontrivially palindromic in base 14.

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

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, 36690 + ... + 36750.

It is an arithmetic number, because the mean of its divisors is an integer number (51894).

2^2239920 is an apocalyptic number.

2239920 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 2239920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4151520).

2239920 is an abundant number, since it is smaller than the sum of its proper divisors (6063120).

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

2239920 is a wasteful number, since it uses less digits than its factorization.

2239920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 88 counting only the distinct ones).

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

The square root of 2239920 is about 1496.6362283468. The cubic root of 2239920 is about 130.8410947384.

The spelling of 2239920 in words is "two million, two hundred thirty-nine thousand, nine hundred twenty".