28894295401604 has 24 divisors (see below), whose sum is σ = 50646831485208. Its totient is φ = 14423777786880.

The previous prime is 28894295401571. The next prime is 28894295401627. The reversal of 28894295401604 is 40610459249882.

It can be written as a sum of positive squares in 4 ways, for example, as 12847220827204 + 16047074574400 = 3584302^2 + 4005880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19811534 + ... + 21219930.

It is an arithmetic number, because the mean of its divisors is an integer number (2110284645217).

Almost surely, 2^{28894295401604} is an apocalyptic number.

It is an amenable number.

28894295401604 is a deficient number, since it is larger than the sum of its proper divisors (21752536083604).

28894295401604 is a wasteful number, since it uses less digits than its factorization.

28894295401604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416695 (or 1416693 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 28894295401604 in words is "twenty-eight trillion, eight hundred ninety-four billion, two hundred ninety-five million, four hundred one thousand, six hundred four".