5781920 has 24 divisors (see below), whose sum is σ = 13660164. Its totient is φ = 2312704.

The previous prime is 5781911. The next prime is 5781961. The reversal of 5781920 is 291875.

It can be written as a sum of positive squares in 2 ways, for example, as 5779216 + 2704 = 2404^2 + 52^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17909 + ... + 18228.

Almost surely, 2^5781920 is an apocalyptic number.

It is an amenable number.

5781920 is an abundant number, since it is smaller than the sum of its proper divisors (7878244).

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

5781920 is a wasteful number, since it uses less digits than its factorization.

5781920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36152 (or 36144 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 5781920 is about 2404.5623302381. The cubic root of 5781920 is about 179.4832918188.

The spelling of 5781920 in words is "five million, seven hundred eighty-one thousand, nine hundred twenty".