27832227640 has 32 divisors (see below), whose sum is σ = 71568586080. Its totient is φ = 9542477952.

The previous prime is 27832227593. The next prime is 27832227659. The reversal of 27832227640 is 4672223872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49700127 + ... + 49700686.

It is an arithmetic number, because the mean of its divisors is an integer number (2236518315).

Almost surely, 2^27832227640 is an apocalyptic number.

27832227640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27832227640 is an abundant number, since it is smaller than the sum of its proper divisors (43736358440).

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

27832227640 is a wasteful number, since it uses less digits than its factorization.

27832227640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99400831 (or 99400827 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 27832227640 in words is "twenty-seven billion, eight hundred thirty-two million, two hundred twenty-seven thousand, six hundred forty".