27480798390 has 128 divisors (see below), whose sum is σ = 71796119040. Its totient is φ = 6709367808.

The previous prime is 27480798347. The next prime is 27480798391. The reversal of 27480798390 is 9389708472.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 27480798390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27480798391) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2017282 + ... + 2030858.

It is an arithmetic number, because the mean of its divisors is an integer number (560907180).

Almost surely, 2^27480798390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27480798390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35898059520).

27480798390 is an abundant number, since it is smaller than the sum of its proper divisors (44315320650).

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

27480798390 is a wasteful number, since it uses less digits than its factorization.

27480798390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13726.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 27480798390 in words is "twenty-seven billion, four hundred eighty million, seven hundred ninety-eight thousand, three hundred ninety".