27238861764 has 135 divisors (see below), whose sum is σ = 72998600983. Its totient is φ = 8856813888.

The previous prime is 27238861759. The next prime is 27238861799. The reversal of 27238861764 is 46716883272.

The square root of 27238861764 is 165042.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11543783364 + 15695078400 = 107442^2 + 125280^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27238861764.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 157449982 + ... + 157450154.

Almost surely, 2^27238861764 is an apocalyptic number.

27238861764 is the 165042-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27238861764

27238861764 is an abundant number, since it is smaller than the sum of its proper divisors (45759739219).

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

27238861764 is an equidigital number, since it uses as much as digits as its factorization.

27238861764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 231 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 27238861764 in words is "twenty-seven billion, two hundred thirty-eight million, eight hundred sixty-one thousand, seven hundred sixty-four".