27122440 has 16 divisors (see below), whose sum is σ = 61025580. Its totient is φ = 10848960.

The previous prime is 27122419. The next prime is 27122449. The reversal of 27122440 is 4422172.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 682276 = 5142^2 + 826^2 .

It is not an unprimeable number, because it can be changed into a prime (27122449) 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 3 ways as a sum of consecutive naturals, for example, 338991 + ... + 339070.

Almost surely, 2^27122440 is an apocalyptic number.

27122440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27122440 is an abundant number, since it is smaller than the sum of its proper divisors (33903140).

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

27122440 is a wasteful number, since it uses less digits than its factorization.

27122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678072 (or 678068 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 27122440 is about 5207.9208903362. The cubic root of 27122440 is about 300.4527977184.

The spelling of 27122440 in words is "twenty-seven million, one hundred twenty-two thousand, four hundred forty".