28449867696480 has 144 divisors (see below), whose sum is σ = 97322547591360. Its totient is φ = 7568082008064.

The previous prime is 28449867696479. The next prime is 28449867696583. The reversal of 28449867696480 is 8469676894482.

It is a happy number.

28449867696480 is a `hidden beast` number, since 2 + 8 + 4 + 49 + 8 + 6 + 7 + 6 + 96 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 28449867696480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23563672 + ... + 24741591.

It is an arithmetic number, because the mean of its divisors is an integer number (675851024940).

Almost surely, 2^{28449867696480} is an apocalyptic number.

28449867696480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28449867696480 is an abundant number, since it is smaller than the sum of its proper divisors (68872679894880).

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

28449867696480 is a wasteful number, since it uses less digits than its factorization.

28449867696480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48305693 (or 48305682 counting only the distinct ones).

The product of its (nonzero) digits is 8026324992, while the sum is 81.

The spelling of 28449867696480 in words is "twenty-eight trillion, four hundred forty-nine billion, eight hundred sixty-seven million, six hundred ninety-six thousand, four hundred eighty".