27151840 has 48 divisors (see below), whose sum is σ = 65726640. Its totient is φ = 10593280.

The previous prime is 27151837. The next prime is 27151867. The reversal of 27151840 is 4815172.

It is a junction number, because it is equal to n+sod(n) for n = 27151799 and 27151808.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4491 + ... + 8629.

It is an arithmetic number, because the mean of its divisors is an integer number (1369305).

Almost surely, 2^27151840 is an apocalyptic number.

27151840 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 27151840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32863320).

27151840 is an abundant number, since it is smaller than the sum of its proper divisors (38574800).

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

27151840 is a wasteful number, since it uses less digits than its factorization.

27151840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195 (or 4187 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 27151840 is about 5210.7427493593. The cubic root of 27151840 is about 300.5613194502.

The spelling of 27151840 in words is "twenty-seven million, one hundred fifty-one thousand, eight hundred forty".