27880234434 has 48 divisors (see below), whose sum is σ = 66024870912. Its totient is φ = 8450491104.

The previous prime is 27880234357. The next prime is 27880234439. The reversal of 27880234434 is 43443208872.

27880234434 is a `hidden beast` number, since 278 + 8 + 0 + 2 + 344 + 34 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 27880234434.

It is not an unprimeable number, because it can be changed into a prime (27880234439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873474 + ... + 904829.

It is an arithmetic number, because the mean of its divisors is an integer number (1375518144).

Almost surely, 2^27880234434 is an apocalyptic number.

27880234434 is an abundant number, since it is smaller than the sum of its proper divisors (38144636478).

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

27880234434 is a wasteful number, since it uses less digits than its factorization.

27880234434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778391 (or 1778388 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

It can be divided in two parts, 278802 and 34434, that added together give a triangular number (313236 = T₇₉₁).

The spelling of 27880234434 in words is "twenty-seven billion, eight hundred eighty million, two hundred thirty-four thousand, four hundred thirty-four".