27078740 has 24 divisors (see below), whose sum is σ = 61240200. Its totient is φ = 9998208.

The previous prime is 27078731. The next prime is 27078749. The reversal of 27078740 is 4787072.

It is an interprime number because it is at equal distance from previous prime (27078731) and next prime (27078749).

It can be written as a sum of positive squares in 4 ways, for example, as 3147076 + 23931664 = 1774^2 + 4892^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27078740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27078749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51815 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (2551675).

Almost surely, 2^27078740 is an apocalyptic number.

27078740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27078740 is an abundant number, since it is smaller than the sum of its proper divisors (34161460).

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

27078740 is a wasteful number, since it uses less digits than its factorization.

27078740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104171 (or 104169 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 27078740 is about 5203.7236667602. The cubic root of 27078740 is about 300.2913465952.

The spelling of 27078740 in words is "twenty-seven million, seventy-eight thousand, seven hundred forty".