27897462080 has 42 divisors (see below), whose sum is σ = 66437947134. Its totient is φ = 11157789696.

The previous prime is 27897462067. The next prime is 27897462097. The reversal of 27897462080 is 8026479872.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16544133376 + 11353328704 = 128624^2 + 106552^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2983172 + ... + 2992508.

Almost surely, 2^27897462080 is an apocalyptic number.

27897462080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27897462080 is an abundant number, since it is smaller than the sum of its proper divisors (38540485054).

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

27897462080 is an frugal number, since it uses more digits than its factorization.

27897462080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18691 (or 9344 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 27897462080 in words is "twenty-seven billion, eight hundred ninety-seven million, four hundred sixty-two thousand, eighty".