27404120 has 16 divisors (see below), whose sum is σ = 61659360. Its totient is φ = 10961632.

The previous prime is 27404081. The next prime is 27404129. The reversal of 27404120 is 2140472.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 27404092 and 27404101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27404129) 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, 342512 + ... + 342591.

It is an arithmetic number, because the mean of its divisors is an integer number (3853710).

Almost surely, 2^27404120 is an apocalyptic number.

27404120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27404120 is an abundant number, since it is smaller than the sum of its proper divisors (34255240).

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

27404120 is a wasteful number, since it uses less digits than its factorization.

27404120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685114 (or 685110 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 27404120 is about 5234.8944592991. The cubic root of 27404120 is about 301.4893347785.

Adding to 27404120 its reverse (2140472), we get a palindrome (29544592).

The spelling of 27404120 in words is "twenty-seven million, four hundred four thousand, one hundred twenty".