2321616 has 40 divisors (see below), whose sum is σ = 6544224. Its totient is φ = 703360.

The previous prime is 2321603. The next prime is 2321623. The reversal of 2321616 is 6161232.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2321592 and 2321601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671 + ... + 2726.

2^2321616 is an apocalyptic number.

It is an amenable number.

2321616 is an abundant number, since it is smaller than the sum of its proper divisors (4222608).

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

2321616 is a wasteful number, since it uses less digits than its factorization.

2321616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4413 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 2321616 is about 1523.6850068174. The cubic root of 2321616 is about 132.4128488244.

Adding to 2321616 its reverse (6161232), we get a palindrome (8482848).

It can be divided in two parts, 23216 and 16, that added together give a palindrome (23232).

The spelling of 2321616 in words is "two million, three hundred twenty-one thousand, six hundred sixteen".