13123868 has 6 divisors (see below), whose sum is σ = 22966776. Its totient is φ = 6561932.

The previous prime is 13123861. The next prime is 13123879. The reversal of 13123868 is 86832131.

It is a happy number.

It is a super-2 number, since 2×13123868² = 344471822562848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640480 + ... + 1640487.

It is an arithmetic number, because the mean of its divisors is an integer number (3827796).

Almost surely, 2^13123868 is an apocalyptic number.

It is an amenable number.

13123868 is a deficient number, since it is larger than the sum of its proper divisors (9842908).

13123868 is a wasteful number, since it uses less digits than its factorization.

13123868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280971 (or 3280969 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 13123868 is about 3622.6879523359. The cubic root of 13123868 is about 235.8779173230.

Adding to 13123868 its reverse (86832131), we get a palindrome (99955999).

The spelling of 13123868 in words is "thirteen million, one hundred twenty-three thousand, eight hundred sixty-eight".