27745542 has 36 divisors (see below), whose sum is σ = 66082380. Its totient is φ = 8407080.

The previous prime is 27745519. The next prime is 27745559. The reversal of 27745542 is 24554772.

It is a happy number.

27745542 is a `hidden beast` number, since 2 + 77 + 45 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 27745497 and 27745506.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 4192 + ... + 8547.

Almost surely, 2^27745542 is an apocalyptic number.

27745542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27745542 is an abundant number, since it is smaller than the sum of its proper divisors (38336838).

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

27745542 is a wasteful number, since it uses less digits than its factorization.

27745542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12769 (or 12755 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 27745542 is about 5267.4037247965. The cubic root of 27745542 is about 302.7362342001.

The spelling of 27745542 in words is "twenty-seven million, seven hundred forty-five thousand, five hundred forty-two".