27000078 has 24 divisors (see below), whose sum is σ = 62817192. Its totient is φ = 7714224.

The previous prime is 27000049. The next prime is 27000079. The reversal of 27000078 is 87000072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27000079) 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, 45625 + ... + 46212.

It is an arithmetic number, because the mean of its divisors is an integer number (2617383).

Almost surely, 2^27000078 is an apocalyptic number.

27000078 is an abundant number, since it is smaller than the sum of its proper divisors (35817114).

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

27000078 is a wasteful number, since it uses less digits than its factorization.

27000078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91856 (or 91849 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 27000078 is about 5196.1599282547. The cubic root of 27000078 is about 300.0002888886. Note that the first 3 decimals are identical.

The spelling of 27000078 in words is "twenty-seven million, seventy-eight", and thus it is an aban number and an uban number.