13812858 has 12 divisors (see below), whose sum is σ = 29927898. Its totient is φ = 4604280.

The previous prime is 13812853. The next prime is 13812863. The reversal of 13812858 is 85821831.

13812858 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13812853) and next prime (13812863).

It can be written as a sum of positive squares in only one way, i.e., 12766329 + 1046529 = 3573^2 + 1023^2 .

It is a super-2 number, since 2×13812858² = 381590092256328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13812853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 383673 + ... + 383708.

Almost surely, 2^13812858 is an apocalyptic number.

13812858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13812858 is an abundant number, since it is smaller than the sum of its proper divisors (16115040).

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

13812858 is a wasteful number, since it uses less digits than its factorization.

13812858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767389 (or 767386 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 13812858 is about 3716.5653498896. The cubic root of 13812858 is about 239.9355035024.

It can be divided in two parts, 138 and 12858, that added together give a square (12996 = 114²).

The spelling of 13812858 in words is "thirteen million, eight hundred twelve thousand, eight hundred fifty-eight".