28611461268 has 72 divisors (see below), whose sum is σ = 78282372168. Its totient is φ = 8758810368.

The previous prime is 28611461233. The next prime is 28611461297. The reversal of 28611461268 is 86216411682.

It is a happy number.

28611461268 is a `hidden beast` number, since 2 + 8 + 611 + 4 + 6 + 1 + 26 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9562492944 + 19048968324 = 97788^2 + 138018^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62971 + ... + 247362.

It is an arithmetic number, because the mean of its divisors is an integer number (1087255169).

Almost surely, 2^28611461268 is an apocalyptic number.

It is an amenable number.

28611461268 is an abundant number, since it is smaller than the sum of its proper divisors (49670910900).

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

28611461268 is a wasteful number, since it uses less digits than its factorization.

28611461268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310553 (or 310548 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 28611461268 in words is "twenty-eight billion, six hundred eleven million, four hundred sixty-one thousand, two hundred sixty-eight".