571345240 has 64 divisors (see below), whose sum is σ = 1335528000. Its totient is φ = 219717120.

The previous prime is 571345213. The next prime is 571345249. The reversal of 571345240 is 42543175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571345249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311125 + ... + 312955.

It is an arithmetic number, because the mean of its divisors is an integer number (20867625).

Almost surely, 2^571345240 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 571345240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667764000).

571345240 is an abundant number, since it is smaller than the sum of its proper divisors (764182760).

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

571345240 is a wasteful number, since it uses less digits than its factorization.

571345240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 571345240 is about 23902.8291212568. The cubic root of 571345240 is about 829.7861935375.

The spelling of 571345240 in words is "five hundred seventy-one million, three hundred forty-five thousand, two hundred forty".