28088887163904 has 1584 divisors, whose sum is σ = 100201742344704. Its totient is φ = 7420236595200.

The previous prime is 28088887163891. The next prime is 28088887163963. The reversal of 28088887163904 is 40936178888082.

28088887163904 is a `hidden beast` number, since 2 + 80 + 8 + 88 + 87 + 1 + 6 + 390 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 214418985919 + ... + 214418986049.

Almost surely, 2^{28088887163904} is an apocalyptic number.

28088887163904 is a gapful number since it is divisible by the number (24) 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 28088887163904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50100871172352).

28088887163904 is an abundant number, since it is smaller than the sum of its proper divisors (72112855180800).

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

28088887163904 is a wasteful number, since it uses less digits than its factorization.

28088887163904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 72.

The spelling of 28088887163904 in words is "twenty-eight trillion, eighty-eight billion, eight hundred eighty-seven million, one hundred sixty-three thousand, nine hundred four".