5728240813 has 4 divisors (see below), whose sum is σ = 5787294940. Its totient is φ = 5669186688.

The previous prime is 5728240801. The next prime is 5728240823. The reversal of 5728240813 is 3180428275.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1049954409 + 4678286404 = 32403^2 + 68398^2 .

It is a cyclic number.

It is not a de Polignac number, because 5728240813 - 2¹⁷ = 5728109741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5728240823) 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, 29526918 + ... + 29527111.

It is an arithmetic number, because the mean of its divisors is an integer number (1446823735).

Almost surely, 2^5728240813 is an apocalyptic number.

It is an amenable number.

5728240813 is a deficient number, since it is larger than the sum of its proper divisors (59054127).

5728240813 is an equidigital number, since it uses as much as digits as its factorization.

5728240813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59054126.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 5728240813 is about 75685.1426172931. The cubic root of 5728240813 is about 1789.2612468079.

The spelling of 5728240813 in words is "five billion, seven hundred twenty-eight million, two hundred forty thousand, eight hundred thirteen".