571897940 has 12 divisors (see below), whose sum is σ = 1200985716. Its totient is φ = 228759168.

The previous prime is 571897939. The next prime is 571897943. The reversal of 571897940 is 49798175.

It can be written as a sum of positive squares in 2 ways, for example, as 314423824 + 257474116 = 17732^2 + 16046^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571897943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14297429 + ... + 14297468.

It is an arithmetic number, because the mean of its divisors is an integer number (100082143).

Almost surely, 2^571897940 is an apocalyptic number.

It is an amenable number.

571897940 is an abundant number, since it is smaller than the sum of its proper divisors (629087776).

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

571897940 is a wasteful number, since it uses less digits than its factorization.

571897940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28594906 (or 28594904 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 571897940 is about 23914.3877195298. The cubic root of 571897940 is about 830.0536763080.

The spelling of 571897940 in words is "five hundred seventy-one million, eight hundred ninety-seven thousand, nine hundred forty".