27488427840 has 224 divisors, whose sum is σ = 102077520000. Its totient is φ = 6944403456.

The previous prime is 27488427839. The next prime is 27488427847. The reversal of 27488427840 is 4872488472.

It is a super-2 number, since 2×27488427840² (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 (27488427847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80436 + ... + 247884.

Almost surely, 2^27488427840 is an apocalyptic number.

27488427840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27488427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51038760000).

27488427840 is an abundant number, since it is smaller than the sum of its proper divisors (74589092160).

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

27488427840 is a wasteful number, since it uses less digits than its factorization.

27488427840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167494 (or 167478 counting only the distinct ones).

The product of its (nonzero) digits is 6422528, while the sum is 54.

The spelling of 27488427840 in words is "twenty-seven billion, four hundred eighty-eight million, four hundred twenty-seven thousand, eight hundred forty".