26928017280 has 768 divisors, whose sum is σ = 103338892800. Its totient is φ = 6437781504.

The previous prime is 26928017261. The next prime is 26928017339. The reversal of 26928017280 is 8271082962.

It is a super-2 number, since 2×26928017280² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 165202479 + ... + 165202641.

It is an arithmetic number, because the mean of its divisors is an integer number (134555850).

Almost surely, 2^26928017280 is an apocalyptic number.

26928017280 is a gapful number since it is divisible by the number (20) 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 26928017280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51669446400).

26928017280 is an abundant number, since it is smaller than the sum of its proper divisors (76410875520).

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

26928017280 is a wasteful number, since it uses less digits than its factorization.

26928017280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 26928017280 in words is "twenty-six billion, nine hundred twenty-eight million, seventeen thousand, two hundred eighty".