27670420 has 12 divisors (see below), whose sum is σ = 58107924. Its totient is φ = 11068160.

The previous prime is 27670417. The next prime is 27670421. The reversal of 27670420 is 2407672.

It can be written as a sum of positive squares in 2 ways, for example, as 15476356 + 12194064 = 3934^2 + 3492^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27670421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691741 + ... + 691780.

It is an arithmetic number, because the mean of its divisors is an integer number (4842327).

Almost surely, 2^27670420 is an apocalyptic number.

27670420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27670420 is an abundant number, since it is smaller than the sum of its proper divisors (30437504).

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

27670420 is a wasteful number, since it uses less digits than its factorization.

27670420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383530 (or 1383528 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 27670420 is about 5260.2680540064. The cubic root of 27670420 is about 302.4627643533.

The spelling of 27670420 in words is "twenty-seven million, six hundred seventy thousand, four hundred twenty".