27990424080 has 240 divisors, whose sum is σ = 98867957760. Its totient is φ = 7082836992.

The previous prime is 27990424051. The next prime is 27990424109. The reversal of 27990424080 is 8042409972.

It is an interprime number because it is at equal distance from previous prime (27990424051) and next prime (27990424109).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2096466 + ... + 2109774.

It is an arithmetic number, because the mean of its divisors is an integer number (411949824).

Almost surely, 2^27990424080 is an apocalyptic number.

27990424080 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 27990424080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49433978880).

27990424080 is an abundant number, since it is smaller than the sum of its proper divisors (70877533680).

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

27990424080 is a wasteful number, since it uses less digits than its factorization.

27990424080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478 (or 13469 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 27990424080 in words is "twenty-seven billion, nine hundred ninety million, four hundred twenty-four thousand, eighty".