27552420 has 192 divisors, whose sum is σ = 101122560. Its totient is φ = 6096384.

The previous prime is 27552403. The next prime is 27552433. The reversal of 27552420 is 2425572.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 139762 + ... + 139958.

It is an arithmetic number, because the mean of its divisors is an integer number (526680).

Almost surely, 2^27552420 is an apocalyptic number.

27552420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27552420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50561280).

27552420 is an abundant number, since it is smaller than the sum of its proper divisors (73570140).

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

27552420 is a wasteful number, since it uses less digits than its factorization.

27552420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 27552420 is about 5249.0399122125. The cubic root of 27552420 is about 302.0322027558.

Adding to 27552420 its reverse (2425572), we get a palindrome (29977992).

It can be divided in two parts, 27552 and 420, that added together give a palindrome (27972).

The spelling of 27552420 in words is "twenty-seven million, five hundred fifty-two thousand, four hundred twenty".