27742887234 has 16 divisors (see below), whose sum is σ = 61650860640. Its totient is φ = 9247629060.

The previous prime is 27742887233. The next prime is 27742887239. The reversal of 27742887234 is 43278824772.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 513757171 = 27742887234 / (2 + 7 + 7 + 4 + 2 + 8 + 8 + 7 + 2 + 3 + 4).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27742887233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256878532 + ... + 256878639.

It is an arithmetic number, because the mean of its divisors is an integer number (3853178790).

Almost surely, 2^27742887234 is an apocalyptic number.

27742887234 is an abundant number, since it is smaller than the sum of its proper divisors (33907973406).

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

27742887234 is a wasteful number, since it uses less digits than its factorization.

27742887234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513757182 (or 513757176 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 54.

The spelling of 27742887234 in words is "twenty-seven billion, seven hundred forty-two million, eight hundred eighty-seven thousand, two hundred thirty-four".