27928644354 has 24 divisors (see below), whose sum is σ = 65166837372. Its totient is φ = 8593428960.

The previous prime is 27928644349. The next prime is 27928644371. The reversal of 27928644354 is 45344682972.

It is a happy number.

27928644354 is a `hidden beast` number, since 2 + 7 + 9 + 286 + 4 + 4 + 354 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26969193729 + 959450625 = 164223^2 + 30975^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27928644354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59676357 + ... + 59676824.

Almost surely, 2^27928644354 is an apocalyptic number.

27928644354 is an abundant number, since it is smaller than the sum of its proper divisors (37238193018).

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

27928644354 is a wasteful number, since it uses less digits than its factorization.

27928644354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119353202 (or 119353199 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 27928644354 in words is "twenty-seven billion, nine hundred twenty-eight million, six hundred forty-four thousand, three hundred fifty-four".