2403871 has 4 divisors (see below), whose sum is σ = 2462544. Its totient is φ = 2345200.

The previous prime is 2403859. The next prime is 2403881. The reversal of 2403871 is 1783042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1783042 = 2 ⋅891521.

It is a de Polignac number, because none of the positive numbers 2^k-2403871 is a prime.

It is a Duffinian number.

2403871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403881) 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, 29275 + ... + 29356.

It is an arithmetic number, because the mean of its divisors is an integer number (615636).

2^2403871 is an apocalyptic number.

2403871 is a deficient number, since it is larger than the sum of its proper divisors (58673).

2403871 is an equidigital number, since it uses as much as digits as its factorization.

2403871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58672.

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

The square root of 2403871 is about 1550.4421949883. The cubic root of 2403871 is about 133.9585339879.

The spelling of 2403871 in words is "two million, four hundred three thousand, eight hundred seventy-one".