28647604001 has 2 divisors, whose sum is σ = 28647604002. Its totient is φ = 28647604000.

The previous prime is 28647603973. The next prime is 28647604031. The reversal of 28647604001 is 10040674682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23157534976 + 5490069025 = 152176^2 + 74095^2 .

It is a cyclic number.

It is not a de Polignac number, because 28647604001 - 2¹⁸ = 28647341857 is a prime.

It is a super-2 number, since 2×28647604001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28647604031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14323802000 + 14323802001.

It is an arithmetic number, because the mean of its divisors is an integer number (14323802001).

Almost surely, 2^28647604001 is an apocalyptic number.

It is an amenable number.

28647604001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28647604001 is an equidigital number, since it uses as much as digits as its factorization.

28647604001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 28647604001 in words is "twenty-eight billion, six hundred forty-seven million, six hundred four thousand, one".