2240381 has 8 divisors (see below), whose sum is σ = 2632224. Its totient is φ = 1879920.

The previous prime is 2240377. The next prime is 2240389. The reversal of 2240381 is 1830422.

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

It is a cyclic number.

It is not a de Polignac number, because 2240381 - 2² = 2240377 is a prime.

It is a super-2 number, since 2×2240381² = 10038614050322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240389) 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, 7691 + ... + 7976.

It is an arithmetic number, because the mean of its divisors is an integer number (329028).

2^2240381 is an apocalyptic number.

It is an amenable number.

2240381 is a deficient number, since it is larger than the sum of its proper divisors (391843).

2240381 is a wasteful number, since it uses less digits than its factorization.

2240381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15691.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2240381 is about 1496.7902324641. The cubic root of 2240381 is about 130.8500702981.

The spelling of 2240381 in words is "two million, two hundred forty thousand, three hundred eighty-one".