27920504320 has 40 divisors (see below), whose sum is σ = 66943777824. Its totient is φ = 11168200704.

The previous prime is 27920504303. The next prime is 27920504363. The reversal of 27920504320 is 2340502972.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×27920504320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5450664 + ... + 5455783.

Almost surely, 2^27920504320 is an apocalyptic number.

27920504320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27920504320 is an abundant number, since it is smaller than the sum of its proper divisors (39023273504).

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

27920504320 is an equidigital number, since it uses as much as digits as its factorization.

27920504320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906470 (or 10906454 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 27920504320 in words is "twenty-seven billion, nine hundred twenty million, five hundred four thousand, three hundred twenty".