27191940 has 24 divisors (see below), whose sum is σ = 76137600. Its totient is φ = 7251168.

The previous prime is 27191939. The next prime is 27191947. The reversal of 27191940 is 4919172.

It is not an unprimeable number, because it can be changed into a prime (27191947) 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 7 ways as a sum of consecutive naturals, for example, 226540 + ... + 226659.

It is an arithmetic number, because the mean of its divisors is an integer number (3172400).

Almost surely, 2^27191940 is an apocalyptic number.

27191940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27191940 is an abundant number, since it is smaller than the sum of its proper divisors (48945660).

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

27191940 is a wasteful number, since it uses less digits than its factorization.

27191940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453211 (or 453209 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 27191940 is about 5214.5891496838. The cubic root of 27191940 is about 300.7092109671.

The spelling of 27191940 in words is "twenty-seven million, one hundred ninety-one thousand, nine hundred forty".