28557045647152 has 120 divisors (see below), whose sum is σ = 60986571609600. Its totient is φ = 12944196904320.

The previous prime is 28557045647071. The next prime is 28557045647167. The reversal of 28557045647152 is 25174654075582.

It is a super-2 number, since 2×28557045647152² (a number of 28 digits) contains 22 as substring.

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, 2530077253 + ... + 2530088539.

It is an arithmetic number, because the mean of its divisors is an integer number (508221430080).

Almost surely, 2^{28557045647152} is an apocalyptic number.

28557045647152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28557045647152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30493285804800).

28557045647152 is an abundant number, since it is smaller than the sum of its proper divisors (32429525962448).

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

28557045647152 is a wasteful number, since it uses less digits than its factorization.

28557045647152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855 (or 14838 counting only the distinct ones).

The product of its (nonzero) digits is 94080000, while the sum is 61.

The spelling of 28557045647152 in words is "twenty-eight trillion, five hundred fifty-seven billion, forty-five million, six hundred forty-seven thousand, one hundred fifty-two".