2390871 has 16 divisors (see below), whose sum is σ = 3665664. Its totient is φ = 1357824.

The previous prime is 2390849. The next prime is 2390879. The reversal of 2390871 is 1780932.

2390871 = T₈₂₃ + T₈₂₄ + ... + T₈₂₉.

It is a happy number.

It is not a de Polignac number, because 2390871 - 2⁷ = 2390743 is a prime.

2390871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2390879) 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 15 ways as a sum of consecutive naturals, for example, 5176 + ... + 5618.

It is an arithmetic number, because the mean of its divisors is an integer number (229104).

2^2390871 is an apocalyptic number.

2390871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2390871 is a deficient number, since it is larger than the sum of its proper divisors (1274793).

2390871 is a wasteful number, since it uses less digits than its factorization.

2390871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2390871 is about 1546.2441592452. The cubic root of 2390871 is about 133.7166172837.

The spelling of 2390871 in words is "two million, three hundred ninety thousand, eight hundred seventy-one".