5731920 has 120 divisors (see below), whose sum is σ = 20311200. Its totient is φ = 1444608.

The previous prime is 5731919. The next prime is 5731949. The reversal of 5731920 is 291375.

5731920 is a `hidden beast` number, since 573 + 1 + 92 + 0 = 666.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13471 + ... + 13889.

It is an arithmetic number, because the mean of its divisors is an integer number (169260).

Almost surely, 2^5731920 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 5731920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10155600).

5731920 is an abundant number, since it is smaller than the sum of its proper divisors (14579280).

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

5731920 is a wasteful number, since it uses less digits than its factorization.

5731920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 5731920 is about 2394.1428528808. The cubic root of 5731920 is about 178.9644239192.

The spelling of 5731920 in words is "five million, seven hundred thirty-one thousand, nine hundred twenty".