571340 has 72 divisors (see below), whose sum is σ = 1551312. Its totient is φ = 174720.

The previous prime is 571339. The next prime is 571369. The reversal of 571340 is 43175.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10754 + ... + 10806.

It is an arithmetic number, because the mean of its divisors is an integer number (21546).

2⁵⁷¹³⁴⁰ 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 571340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775656).

571340 is an abundant number, since it is smaller than the sum of its proper divisors (979972).

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

571340 is a wasteful number, since it uses less digits than its factorization.

571340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 571340 is about 755.8703592548. The cubic root of 571340 is about 82.9783656780.

The spelling of 571340 in words is "five hundred seventy-one thousand, three hundred forty".