27250420 has 12 divisors (see below), whose sum is σ = 57225924. Its totient is φ = 10900160.

The previous prime is 27250417. The next prime is 27250451. The reversal of 27250420 is 2405272.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 19873764 = 2716^2 + 4458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27250391 and 27250400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681241 + ... + 681280.

It is an arithmetic number, because the mean of its divisors is an integer number (4768827).

Almost surely, 2^27250420 is an apocalyptic number.

27250420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27250420 is an abundant number, since it is smaller than the sum of its proper divisors (29975504).

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

27250420 is a wasteful number, since it uses less digits than its factorization.

27250420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362530 (or 1362528 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 27250420 is about 5220.1934830042. The cubic root of 27250420 is about 300.9246287592.

Adding to 27250420 its reverse (2405272), we get a palindrome (29655692).

The spelling of 27250420 in words is "twenty-seven million, two hundred fifty thousand, four hundred twenty".