28945649094 has 12 divisors (see below), whose sum is σ = 57892131684. Its totient is φ = 9648410784.

The previous prime is 28945649011. The next prime is 28945649147. The reversal of 28945649094 is 49094654982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 382014 + ... + 451470.

It is an arithmetic number, because the mean of its divisors is an integer number (4824344307).

Almost surely, 2^28945649094 is an apocalyptic number.

28945649094 is an abundant number, since it is smaller than the sum of its proper divisors (28946482590).

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

28945649094 is an frugal number, since it uses more digits than its factorization.

28945649094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138919 (or 69462 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 28945649094 in words is "twenty-eight billion, nine hundred forty-five million, six hundred forty-nine thousand, ninety-four".