28246456644 has 24 divisors (see below), whose sum is σ = 75323884608. Its totient is φ = 8070416160.

The previous prime is 28246456643. The next prime is 28246456649. The reversal of 28246456644 is 44665464282.

It is not an unprimeable number, because it can be changed into a prime (28246456643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168133587 + ... + 168133754.

It is an arithmetic number, because the mean of its divisors is an integer number (3138495192).

Almost surely, 2^28246456644 is an apocalyptic number.

It is an amenable number.

28246456644 is an abundant number, since it is smaller than the sum of its proper divisors (47077427964).

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

28246456644 is a wasteful number, since it uses less digits than its factorization.

28246456644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336267355 (or 336267353 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 51.

The spelling of 28246456644 in words is "twenty-eight billion, two hundred forty-six million, four hundred fifty-six thousand, six hundred forty-four".