27890636396 has 24 divisors (see below), whose sum is σ = 55828096800. Its totient is φ = 11943096192.

The previous prime is 27890636387. The next prime is 27890636399. The reversal of 27890636396 is 69363609872.

It is not an unprimeable number, because it can be changed into a prime (27890636399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384071 + ... + 450878.

It is an arithmetic number, because the mean of its divisors is an integer number (2326170700).

Almost surely, 2^27890636396 is an apocalyptic number.

It is an amenable number.

27890636396 is an abundant number, since it is smaller than the sum of its proper divisors (27937460404).

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

27890636396 is a wasteful number, since it uses less digits than its factorization.

27890636396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836153 (or 836151 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 27890636396 in words is "twenty-seven billion, eight hundred ninety million, six hundred thirty-six thousand, three hundred ninety-six".