4565840 has 20 divisors (see below), whose sum is σ = 10615764. Its totient is φ = 1826304.

The previous prime is 4565839. The next prime is 4565851. The reversal of 4565840 is 485654.

It can be written as a sum of positive squares in 2 ways, for example, as 2650384 + 1915456 = 1628^2 + 1384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 4565797 and 4565806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28457 + ... + 28616.

Almost surely, 2^4565840 is an apocalyptic number.

4565840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4565840 is an abundant number, since it is smaller than the sum of its proper divisors (6049924).

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

4565840 is a wasteful number, since it uses less digits than its factorization.

4565840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57086 (or 57080 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 4565840 is about 2136.7826281585. The cubic root of 4565840 is about 165.8976482325.

The spelling of 4565840 in words is "four million, five hundred sixty-five thousand, eight hundred forty".