27421497 has 40 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 17012160.

The previous prime is 27421483. The next prime is 27421517. The reversal of 27421497 is 79412472.

It is not a de Polignac number, because 27421497 - 2⁴ = 27421481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27421417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76204 + ... + 76562.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^27421497 is an apocalyptic number.

27421497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27421497 is a deficient number, since it is larger than the sum of its proper divisors (16486983).

27421497 is a wasteful number, since it uses less digits than its factorization.

27421497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 426 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 27421497 is about 5236.5539240993. The cubic root of 27421497 is about 301.5530462839.

The spelling of 27421497 in words is "twenty-seven million, four hundred twenty-one thousand, four hundred ninety-seven".