2381407 has 4 divisors (see below), whose sum is σ = 2721616. Its totient is φ = 2041200.

The previous prime is 2381387. The next prime is 2381413. The reversal of 2381407 is 7041832.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2381407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170094 + ... + 170107.

It is an arithmetic number, because the mean of its divisors is an integer number (680404).

2^2381407 is an apocalyptic number.

2381407 is a deficient number, since it is larger than the sum of its proper divisors (340209).

2381407 is an equidigital number, since it uses as much as digits as its factorization.

2381407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340208.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2381407 is about 1543.1808059978. The cubic root of 2381407 is about 133.5399497958.

The spelling of 2381407 in words is "two million, three hundred eighty-one thousand, four hundred seven".