27550940 has 48 divisors (see below), whose sum is σ = 61388544. Its totient is φ = 10368000.

The previous prime is 27550933. The next prime is 27550951. The reversal of 27550940 is 4905572.

It is a junction number, because it is equal to n+sod(n) for n = 27550897 and 27550906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22340 + ... + 23540.

It is an arithmetic number, because the mean of its divisors is an integer number (1278928).

Almost surely, 2^27550940 is an apocalyptic number.

27550940 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 27550940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30694272).

27550940 is an abundant number, since it is smaller than the sum of its proper divisors (33837604).

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

27550940 is a wasteful number, since it uses less digits than its factorization.

27550940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 27550940 is about 5248.8989321571. The cubic root of 27550940 is about 302.0267946929.

It can be divided in two parts, 275 and 50940, that added together give a palindrome (51215).

The spelling of 27550940 in words is "twenty-seven million, five hundred fifty thousand, nine hundred forty".