27243620 has 12 divisors (see below), whose sum is σ = 57211644. Its totient is φ = 10897440.

The previous prime is 27243613. The next prime is 27243647. The reversal of 27243620 is 2634272.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 20720704 = 2554^2 + 4552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27243620.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681071 + ... + 681110.

It is an arithmetic number, because the mean of its divisors is an integer number (4767637).

Almost surely, 2^27243620 is an apocalyptic number.

27243620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27243620 is an abundant number, since it is smaller than the sum of its proper divisors (29968024).

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

27243620 is a wasteful number, since it uses less digits than its factorization.

27243620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362190 (or 1362188 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 27243620 is about 5219.5421255125. The cubic root of 27243620 is about 300.8995960232.

Adding to 27243620 its reverse (2634272), we get a palindrome (29877892).

The spelling of 27243620 in words is "twenty-seven million, two hundred forty-three thousand, six hundred twenty".