26001616 has 20 divisors (see below), whose sum is σ = 51205924. Its totient is φ = 12787200.

The previous prime is 26001611. The next prime is 26001631. The reversal of 26001616 is 61610062.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 24800400 = 1096^2 + 4980^2 .

It is a super-2 number, since 2×26001616² = 1352168069222912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26001611) 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, 12345 + ... + 14296.

Almost surely, 2^26001616 is an apocalyptic number.

It is an amenable number.

26001616 is a deficient number, since it is larger than the sum of its proper divisors (25204308).

26001616 is a wasteful number, since it uses less digits than its factorization.

26001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26710 (or 26704 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 26001616 is about 5099.1779729678. The cubic root of 26001616 is about 296.2557443977.

Adding to 26001616 its reverse (61610062), we get a palindrome (87611678).

The spelling of 26001616 in words is "twenty-six million, one thousand, six hundred sixteen".