27955422 has 64 divisors (see below), whose sum is σ = 71366400. Its totient is φ = 8022240.

The previous prime is 27955393. The next prime is 27955427. The reversal of 27955422 is 22455972.

It is a happy number.

27955422 is a `hidden beast` number, since 27 + 95 + 542 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27955427) 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 31 ways as a sum of consecutive naturals, for example, 10048 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (1115100).

Almost surely, 2^27955422 is an apocalyptic number.

27955422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 27955422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35683200).

27955422 is an abundant number, since it is smaller than the sum of its proper divisors (43410978).

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

27955422 is a wasteful number, since it uses less digits than its factorization.

27955422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518 (or 2512 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 27955422 is about 5287.2887191830. The cubic root of 27955422 is about 303.4976627069.

The spelling of 27955422 in words is "twenty-seven million, nine hundred fifty-five thousand, four hundred twenty-two".