2240281 has 8 divisors (see below), whose sum is σ = 2321928. Its totient is φ = 2160000.

The previous prime is 2240267. The next prime is 2240291. The reversal of 2240281 is 1820422.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 1974025 = 516^2 + 1405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 4-Lehmer number, since φ(2240281) divides (2240281-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 2240281 - 2¹¹ = 2238233 is a prime.

It is a super-2 number, since 2×2240281² = 10037717917922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3871 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (290241).

2^2240281 is an apocalyptic number.

It is an amenable number.

2240281 is a deficient number, since it is larger than the sum of its proper divisors (81647).

2240281 is a wasteful number, since it uses less digits than its factorization.

2240281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2240281 is about 1496.7568272769. The cubic root of 2240281 is about 130.8481234266.

The spelling of 2240281 in words is "two million, two hundred forty thousand, two hundred eighty-one".