27868926440 has 64 divisors (see below), whose sum is σ = 63406098000. Its totient is φ = 11023147008.

The previous prime is 27868926413. The next prime is 27868926479. The reversal of 27868926440 is 4462986872.

It can be written as a sum of positive squares in 8 ways, for example, as 5863577476 + 22005348964 = 76574^2 + 148342^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6007802 + ... + 6012438.

Almost surely, 2^27868926440 is an apocalyptic number.

27868926440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27868926440 is an abundant number, since it is smaller than the sum of its proper divisors (35537171560).

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

27868926440 is a wasteful number, since it uses less digits than its factorization.

27868926440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6294 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 27868926440 in words is "twenty-seven billion, eight hundred sixty-eight million, nine hundred twenty-six thousand, four hundred forty".