28602440660506 has 32 divisors (see below), whose sum is σ = 43032088051920. Its totient is φ = 14258490064896.

The previous prime is 28602440660503. The next prime is 28602440660567. The reversal of 28602440660506 is 60506604420682.

It can be written as a sum of positive squares in 8 ways, for example, as 2663231427481 + 25939209233025 = 1631941^2 + 5093055^2 .

It is a super-2 number, since 2×28602440660506² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28602440660506.

It is not an unprimeable number, because it can be changed into a prime (28602440660503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3118107336 + ... + 3118116508.

Almost surely, 2^{28602440660506} is an apocalyptic number.

28602440660506 is a deficient number, since it is larger than the sum of its proper divisors (14429647391414).

28602440660506 is a wasteful number, since it uses less digits than its factorization.

28602440660506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 28602440660506 in words is "twenty-eight trillion, six hundred two billion, four hundred forty million, six hundred sixty thousand, five hundred six".