27042478 has 16 divisors (see below), whose sum is σ = 44337024. Its totient is φ = 12314880.

The previous prime is 27042469. The next prime is 27042487. The reversal of 27042478 is 87424072.

It is an interprime number because it is at equal distance from previous prime (27042469) and next prime (27042487).

It is a Harshad number since it is a multiple of its sum of digits (34).

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 7 ways as a sum of consecutive naturals, for example, 11775 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (2771064).

Almost surely, 2^27042478 is an apocalyptic number.

27042478 is a deficient number, since it is larger than the sum of its proper divisors (17294546).

27042478 is a wasteful number, since it uses less digits than its factorization.

27042478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25707.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 27042478 is about 5200.2382637722. The cubic root of 27042478 is about 300.1572434931.

The spelling of 27042478 in words is "twenty-seven million, forty-two thousand, four hundred seventy-eight".