28215854526288 has 160 divisors (see below), whose sum is σ = 85772935930752. Its totient is φ = 7879753728000.

The previous prime is 28215854526287. The next prime is 28215854526367. The reversal of 28215854526288 is 88262545851282.

It is a super-2 number, since 2×28215854526288² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28215854526287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903888 + ... + 7566288.

Almost surely, 2^{28215854526288} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28215854526288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42886467965376).

28215854526288 is an abundant number, since it is smaller than the sum of its proper divisors (57557081404464).

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

28215854526288 is a wasteful number, since it uses less digits than its factorization.

28215854526288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663053 (or 6663047 counting only the distinct ones).

The product of its digits is 196608000, while the sum is 66.

The spelling of 28215854526288 in words is "twenty-eight trillion, two hundred fifteen billion, eight hundred fifty-four million, five hundred twenty-six thousand, two hundred eighty-eight".