28049861081088 has 3240 divisors, whose sum is σ = 114493474695600. Its totient is φ = 6814851563520.

The previous prime is 28049861081063. The next prime is 28049861081129. The reversal of 28049861081088 is 88018016894082.

28049861081088 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 9 + 8 + 610 + 8 + 1 + 0 + 8 + 8 = 666.

It is a super-2 number, since 2×28049861081088² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 269 ways as a sum of consecutive naturals, for example, 355061532633 + ... + 355061532711.

It is an arithmetic number, because the mean of its divisors is an integer number (35337492190).

Almost surely, 2^{28049861081088} is an apocalyptic number.

28049861081088 is a gapful number since it is divisible by the number (28) 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 28049861081088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57246737347800).

28049861081088 is an abundant number, since it is smaller than the sum of its proper divisors (86443613614512).

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

28049861081088 is a wasteful number, since it uses less digits than its factorization.

28049861081088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 63.

The spelling of 28049861081088 in words is "twenty-eight trillion, forty-nine billion, eight hundred sixty-one million, eighty-one thousand, eighty-eight".