27708953472 has 128 divisors (see below), whose sum is σ = 82425139200. Its totient is φ = 9163445760.

The previous prime is 27708953413. The next prime is 27708953473. The reversal of 27708953472 is 27435980772.

27708953472 is a `hidden beast` number, since 27 + 7 + 0 + 89 + 534 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×27708953472² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27708953473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407347 + ... + 470477.

It is an arithmetic number, because the mean of its divisors is an integer number (643946400).

Almost surely, 2^27708953472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27708953472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41212569600).

27708953472 is an abundant number, since it is smaller than the sum of its proper divisors (54716185728).

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

27708953472 is a wasteful number, since it uses less digits than its factorization.

27708953472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63281 (or 63263 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 27708953472 in words is "twenty-seven billion, seven hundred eight million, nine hundred fifty-three thousand, four hundred seventy-two".