565321240 has 64 divisors (see below), whose sum is σ = 1401455520. Its totient is φ = 203520000.

The previous prime is 565321181. The next prime is 565321291. The reversal of 565321240 is 42123565.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 565321199 and 565321208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38080 + ... + 50800.

Almost surely, 2^565321240 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 565321240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700727760).

565321240 is an abundant number, since it is smaller than the sum of its proper divisors (836134280).

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

565321240 is a wasteful number, since it uses less digits than its factorization.

565321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844 (or 12840 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 565321240 is about 23776.4850219708. The cubic root of 565321240 is about 826.8595897575.

The spelling of 565321240 in words is "five hundred sixty-five million, three hundred twenty-one thousand, two hundred forty".