28211221416892 has 24 divisors (see below), whose sum is σ = 49411364095296. Its totient is φ = 14093692761408.

The previous prime is 28211221416841. The next prime is 28211221416923. The reversal of 28211221416892 is 29861412211282.

It is a congruent number.

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, 28305418 + ... + 29285134.

It is an arithmetic number, because the mean of its divisors is an integer number (2058806837304).

Almost surely, 2^{28211221416892} is an apocalyptic number.

It is an amenable number.

28211221416892 is a deficient number, since it is larger than the sum of its proper divisors (21200142678404).

28211221416892 is a wasteful number, since it uses less digits than its factorization.

28211221416892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985797 (or 985795 counting only the distinct ones).

The product of its digits is 442368, while the sum is 49.

The spelling of 28211221416892 in words is "twenty-eight trillion, two hundred eleven billion, two hundred twenty-one million, four hundred sixteen thousand, eight hundred ninety-two".