27420678 has 48 divisors (see below), whose sum is σ = 61915776. Its totient is φ = 8760960.

The previous prime is 27420671. The next prime is 27420703. The reversal of 27420678 is 87602472.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27420671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87450 + ... + 87762.

It is an arithmetic number, because the mean of its divisors is an integer number (1289912).

Almost surely, 2^27420678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27420678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30957888).

27420678 is an abundant number, since it is smaller than the sum of its proper divisors (34495098).

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

27420678 is a wasteful number, since it uses less digits than its factorization.

27420678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 27420678 is about 5236.4757232322. The cubic root of 27420678 is about 301.5500440845.

The spelling of 27420678 in words is "twenty-seven million, four hundred twenty thousand, six hundred seventy-eight".