27250720 has 96 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 9010176.

The previous prime is 27250697. The next prime is 27250721. The reversal of 27250720 is 2705272.

It is not an unprimeable number, because it can be changed into a prime (27250721) 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 15 ways as a sum of consecutive naturals, for example, 32061 + ... + 32899.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^27250720 is an apocalyptic number.

27250720 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 27250720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38102400).

27250720 is an abundant number, since it is smaller than the sum of its proper divisors (48954080).

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

27250720 is a wasteful number, since it uses less digits than its factorization.

27250720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 27250720 is about 5220.2222174923. Note that the first 4 decimals coincide. The cubic root of 27250720 is about 300.9257330487.

Adding to 27250720 its reverse (2705272), we get a palindrome (29955992).

The spelling of 27250720 in words is "twenty-seven million, two hundred fifty thousand, seven hundred twenty".