27480797 has 4 divisors (see below), whose sum is σ = 27789660. Its totient is φ = 27171936.

The previous prime is 27480773. The next prime is 27480799. The reversal of 27480797 is 79708472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14092516 + 13388281 = 3754^2 + 3659^2 .

It is a cyclic number.

It is not a de Polignac number, because 27480797 - 2¹⁰ = 27479773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27480799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154298 + ... + 154475.

It is an arithmetic number, because the mean of its divisors is an integer number (6947415).

Almost surely, 2^27480797 is an apocalyptic number.

It is an amenable number.

27480797 is a deficient number, since it is larger than the sum of its proper divisors (308863).

27480797 is an equidigital number, since it uses as much as digits as its factorization.

27480797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308862.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 27480797 is about 5242.2129868978. The cubic root of 27480797 is about 301.7702629792.

The spelling of 27480797 in words is "twenty-seven million, four hundred eighty thousand, seven hundred ninety-seven".