27100404 has 18 divisors (see below), whose sum is σ = 68503890. Its totient is φ = 9033456.

The previous prime is 27100399. The next prime is 27100427. The reversal of 27100404 is 40400172.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13704804 + 13395600 = 3702^2 + 3660^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 376359 + ... + 376430.

Almost surely, 2^27100404 is an apocalyptic number.

It is an amenable number.

27100404 is an abundant number, since it is smaller than the sum of its proper divisors (41403486).

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

27100404 is a wasteful number, since it uses less digits than its factorization.

27100404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752799 (or 752794 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 27100404 is about 5205.8048369104. The cubic root of 27100404 is about 300.3714066672.

Adding to 27100404 its reverse (40400172), we get a palindrome (67500576).

The spelling of 27100404 in words is "twenty-seven million, one hundred thousand, four hundred four".