2431616 has 48 divisors (see below), whose sum is σ = 5358570. Its totient is φ = 1098240.

The previous prime is 2431589. The next prime is 2431633. The reversal of 2431616 is 6161342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2238016 + 193600 = 1496^2 + 440^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2431591 and 2431600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15410 + ... + 15566.

2^2431616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2431616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2679285).

2431616 is an abundant number, since it is smaller than the sum of its proper divisors (2926954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2431616 is a wasteful number, since it uses less digits than its factorization.

2431616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 170 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 2431616 is about 1559.3639729069. The cubic root of 2431616 is about 134.4719380564.

Adding to 2431616 its reverse (6161342), we get a palindrome (8592958).

The spelling of 2431616 in words is "two million, four hundred thirty-one thousand, six hundred sixteen".