28440169916 has 48 divisors (see below), whose sum is σ = 52681638912. Its totient is φ = 13415846400.

The previous prime is 28440169913. The next prime is 28440169957. The reversal of 28440169916 is 61996104482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28440169913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788231 + ... + 823521.

It is an arithmetic number, because the mean of its divisors is an integer number (1097534144).

Almost surely, 2^28440169916 is an apocalyptic number.

It is an amenable number.

28440169916 is a deficient number, since it is larger than the sum of its proper divisors (24241468996).

28440169916 is a wasteful number, since it uses less digits than its factorization.

28440169916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35490 (or 35488 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 28440169916 in words is "twenty-eight billion, four hundred forty million, one hundred sixty-nine thousand, nine hundred sixteen".