27958139528 has 32 divisors (see below), whose sum is σ = 57227268960. Its totient is φ = 12699319680.

The previous prime is 27958139527. The next prime is 27958139557. The reversal of 27958139528 is 82593185972.

It is not an unprimeable number, because it can be changed into a prime (27958139527) 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, 15251 + ... + 236957.

It is an arithmetic number, because the mean of its divisors is an integer number (1788352155).

Almost surely, 2^27958139528 is an apocalyptic number.

It is an amenable number.

27958139528 is an abundant number, since it is smaller than the sum of its proper divisors (29269129432).

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

27958139528 is a wasteful number, since it uses less digits than its factorization.

27958139528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223157 (or 223153 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The spelling of 27958139528 in words is "twenty-seven billion, nine hundred fifty-eight million, one hundred thirty-nine thousand, five hundred twenty-eight".