28723310021266 has 96 divisors (see below), whose sum is σ = 55078755701760. Its totient is φ = 11149401108384.

The previous prime is 28723310021257. The next prime is 28723310021359. The reversal of 28723310021266 is 66212001332782.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84926491 + ... + 85264033.

It is an arithmetic number, because the mean of its divisors is an integer number (573737038560).

Almost surely, 2^{28723310021266} is an apocalyptic number.

28723310021266 is a deficient number, since it is larger than the sum of its proper divisors (26355445680494).

28723310021266 is a wasteful number, since it uses less digits than its factorization.

28723310021266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339588 (or 339581 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 28723310021266 in words is "twenty-eight trillion, seven hundred twenty-three billion, three hundred ten million, twenty-one thousand, two hundred sixty-six".