27238820 has 48 divisors (see below), whose sum is σ = 66624768. Its totient is φ = 9160320.

The previous prime is 27238819. The next prime is 27238829. The reversal of 27238820 is 2883272.

It is not an unprimeable number, because it can be changed into a prime (27238829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5585 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^27238820 is an apocalyptic number.

27238820 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 27238820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33312384).

27238820 is an abundant number, since it is smaller than the sum of its proper divisors (39385948).

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

27238820 is a wasteful number, since it uses less digits than its factorization.

27238820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 27238820 is about 5219.0822948101. The cubic root of 27238820 is about 300.8819233487.

The spelling of 27238820 in words is "twenty-seven million, two hundred thirty-eight thousand, eight hundred twenty".