27428406 has 16 divisors (see below), whose sum is σ = 55756848. Its totient is φ = 8992800.

The previous prime is 27428383. The next prime is 27428411. The reversal of 27428406 is 60482472.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37105 + ... + 37836.

It is an arithmetic number, because the mean of its divisors is an integer number (3484803).

Almost surely, 2^27428406 is an apocalyptic number.

27428406 is an abundant number, since it is smaller than the sum of its proper divisors (28328442).

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

27428406 is a wasteful number, since it uses less digits than its factorization.

27428406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75007.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 27428406 is about 5237.2135721202. The cubic root of 27428406 is about 301.5783701510.

It can be divided in two parts, 274 and 28406, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 27428406 in words is "twenty-seven million, four hundred twenty-eight thousand, four hundred six".