27129012 has 24 divisors (see below), whose sum is σ = 63432096. Its totient is φ = 9024288.

The previous prime is 27128987. The next prime is 27129013. The reversal of 27129012 is 21092172.

It is a super-2 number, since 2×27129012² = 1471966584192288, which contains 22 as substring.

It is a cake number, because a cake can be divided into 27129012 parts by 546 planar cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27129013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4498 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (2643004).

Almost surely, 2^27129012 is an apocalyptic number.

It is an amenable number.

27129012 is an abundant number, since it is smaller than the sum of its proper divisors (36303084).

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

27129012 is a wasteful number, since it uses less digits than its factorization.

27129012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4685 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 27129012 is about 5208.5518140842. The cubic root of 27129012 is about 300.4770631891.

The spelling of 27129012 in words is "twenty-seven million, one hundred twenty-nine thousand, twelve".