27157240 has 96 divisors (see below), whose sum is σ = 69713280. Its totient is φ = 9504000.

The previous prime is 27157219. The next prime is 27157243. The reversal of 27157240 is 4275172.

It is a junction number, because it is equal to n+sod(n) for n = 27157199 and 27157208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27157243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149950 + ... + 150130.

It is an arithmetic number, because the mean of its divisors is an integer number (726180).

Almost surely, 2^27157240 is an apocalyptic number.

27157240 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 27157240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34856640).

27157240 is an abundant number, since it is smaller than the sum of its proper divisors (42556040).

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

27157240 is a wasteful number, since it uses less digits than its factorization.

27157240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 27157240 is about 5211.2608838936. The cubic root of 27157240 is about 300.5812434964.

The spelling of 27157240 in words is "twenty-seven million, one hundred fifty-seven thousand, two hundred forty".