27706480 has 20 divisors (see below), whose sum is σ = 64417752. Its totient is φ = 11082560.

The previous prime is 27706477. The next prime is 27706487. The reversal of 27706480 is 8460772.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27706487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173086 + ... + 173245.

Almost surely, 2^27706480 is an apocalyptic number.

27706480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27706480 is an abundant number, since it is smaller than the sum of its proper divisors (36711272).

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

27706480 is a wasteful number, since it uses less digits than its factorization.

27706480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346344 (or 346338 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 27706480 is about 5263.6945200116. The cubic root of 27706480 is about 302.5940968111.

The spelling of 27706480 in words is "twenty-seven million, seven hundred six thousand, four hundred eighty".