27912429 has 12 divisors (see below), whose sum is σ = 40734876. Its totient is φ = 18415872.

The previous prime is 27912427. The next prime is 27912449. The reversal of 27912429 is 92421972.

It can be written as a sum of positive squares in 2 ways, for example, as 21178404 + 6734025 = 4602^2 + 2595^2 .

It is not a de Polignac number, because 27912429 - 2¹ = 27912427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27912393 and 27912402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27912427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15114 + ... + 16859.

It is an arithmetic number, because the mean of its divisors is an integer number (3394573).

Almost surely, 2^27912429 is an apocalyptic number.

It is an amenable number.

27912429 is a deficient number, since it is larger than the sum of its proper divisors (12822447).

27912429 is a wasteful number, since it uses less digits than its factorization.

27912429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076 (or 32073 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 27912429 is about 5283.2214604349. The cubic root of 27912429 is about 303.3419985717.

The spelling of 27912429 in words is "twenty-seven million, nine hundred twelve thousand, four hundred twenty-nine".