27129672 has 24 divisors (see below), whose sum is σ = 73476390. Its totient is φ = 9043200.

The previous prime is 27129667. The next prime is 27129709. The reversal of 27129672 is 27692172.

It can be written as a sum of positive squares in only one way, i.e., 21958596 + 5171076 = 4686^2 + 2274^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188329 + ... + 188472.

Almost surely, 2^27129672 is an apocalyptic number.

It is an amenable number.

27129672 is an abundant number, since it is smaller than the sum of its proper divisors (46346718).

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

27129672 is a wasteful number, since it uses less digits than its factorization.

27129672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376813 (or 376806 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 27129672 is about 5208.6151710411. The cubic root of 27129672 is about 300.4794998580.

Subtracting 27129672 from its reverse (27692172), we obtain a square (562500 = 750²).

The spelling of 27129672 in words is "twenty-seven million, one hundred twenty-nine thousand, six hundred seventy-two".