28603542013 has 4 divisors (see below), whose sum is σ = 28728448540. Its totient is φ = 28478635488.

The previous prime is 28603542007. The next prime is 28603542029. The reversal of 28603542013 is 31024530682.

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 17820381049 + 10783160964 = 133493^2 + 103842^2 .

It is a cyclic number.

It is not a de Polignac number, because 28603542013 - 2⁹ = 28603541501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28603542013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28603542313) 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, 62452920 + ... + 62453377.

It is an arithmetic number, because the mean of its divisors is an integer number (7182112135).

Almost surely, 2^28603542013 is an apocalyptic number.

It is an amenable number.

28603542013 is a deficient number, since it is larger than the sum of its proper divisors (124906527).

28603542013 is a wasteful number, since it uses less digits than its factorization.

28603542013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124906526.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 28603542013 in words is "twenty-eight billion, six hundred three million, five hundred forty-two thousand, thirteen".