26878730928 has 40 divisors (see below), whose sum is σ = 79356254208. Its totient is φ = 7679637312.

The previous prime is 26878730917. The next prime is 26878730999. The reversal of 26878730928 is 82903787862.

It is a super-3 number, since 3×26878730928³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39997776 + ... + 39998447.

Almost surely, 2^26878730928 is an apocalyptic number.

26878730928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26878730928 is an abundant number, since it is smaller than the sum of its proper divisors (52477523280).

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

26878730928 is a wasteful number, since it uses less digits than its factorization.

26878730928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79996241 (or 79996235 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 26878730928 in words is "twenty-six billion, eight hundred seventy-eight million, seven hundred thirty thousand, nine hundred twenty-eight".