27408738 has 48 divisors (see below), whose sum is σ = 65007360. Its totient is φ = 7678944.

The previous prime is 27408727. The next prime is 27408739. The reversal of 27408738 is 83780472.

It is a junction number, because it is equal to n+sod(n) for n = 27408696 and 27408705.

It is not an unprimeable number, because it can be changed into a prime (27408739) 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 23 ways as a sum of consecutive naturals, for example, 14703 + ... + 16461.

It is an arithmetic number, because the mean of its divisors is an integer number (1354320).

Almost surely, 2^27408738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27408738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32503680).

27408738 is an abundant number, since it is smaller than the sum of its proper divisors (37598622).

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

27408738 is a wasteful number, since it uses less digits than its factorization.

27408738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 27408738 is about 5235.3355193340. The cubic root of 27408738 is about 301.5062689664.

The spelling of 27408738 in words is "twenty-seven million, four hundred eight thousand, seven hundred thirty-eight".