27421047 has 12 divisors (see below), whose sum is σ = 41693080. Its totient is φ = 17318448.

The previous prime is 27421039. The next prime is 27421049. The reversal of 27421047 is 74012472.

It is a happy number.

It is not a de Polignac number, because 27421047 - 2³ = 27421039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27421047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27421049) 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, 80008 + ... + 80349.

Almost surely, 2^27421047 is an apocalyptic number.

27421047 is a deficient number, since it is larger than the sum of its proper divisors (14272033).

27421047 is a wasteful number, since it uses less digits than its factorization.

27421047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160382 (or 160379 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 27421047 is about 5236.5109567345. The cubic root of 27421047 is about 301.5513967312.

It can be divided in two parts, 274 and 21047, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 27421047 in words is "twenty-seven million, four hundred twenty-one thousand, forty-seven".