2291427 has 24 divisors (see below), whose sum is σ = 3514368. Its totient is φ = 1436400.

The previous prime is 2291417. The next prime is 2291437. The reversal of 2291427 is 7241922.

It is an interprime number because it is at equal distance from previous prime (2291417) and next prime (2291437).

It is not a de Polignac number, because 2291427 - 2¹⁰ = 2290403 is a prime.

It is a super-4 number, since 4×2291427⁴ (a number of 27 digits) contains 4444 as substring.

It is a d-powerful number, because it can be written as 2³ + 2¹⁷ + 9⁵ + 1 + 4⁶ + 2²¹ + 7² .

It is a self number, because there is not a number n which added to its sum of digits gives 2291427.

It is not an unprimeable number, because it can be changed into a prime (2291417) 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 23 ways as a sum of consecutive naturals, for example, 11902 + ... + 12092.

It is an arithmetic number, because the mean of its divisors is an integer number (146432).

2^2291427 is an apocalyptic number.

2291427 is a deficient number, since it is larger than the sum of its proper divisors (1222941).

2291427 is a wasteful number, since it uses less digits than its factorization.

2291427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 268 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2291427 is about 1513.7460156843. The cubic root of 2291427 is about 131.8364020071.

The spelling of 2291427 in words is "two million, two hundred ninety-one thousand, four hundred twenty-seven".