27129948 has 48 divisors (see below), whose sum is σ = 67038720. Its totient is φ = 8515584.

The previous prime is 27129931. The next prime is 27129979. The reversal of 27129948 is 84992172.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58365 + ... + 58827.

It is an arithmetic number, because the mean of its divisors is an integer number (1396640).

Almost surely, 2^27129948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27129948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33519360).

27129948 is an abundant number, since it is smaller than the sum of its proper divisors (39908772).

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

27129948 is a wasteful number, since it uses less digits than its factorization.

27129948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 27129948 is about 5208.6416655401. The cubic root of 27129948 is about 300.4805188168.

The spelling of 27129948 in words is "twenty-seven million, one hundred twenty-nine thousand, nine hundred forty-eight".