13706238 has 48 divisors (see below), whose sum is σ = 33941376. Its totient is φ = 3612960.

The previous prime is 13706227. The next prime is 13706269. The reversal of 13706238 is 83260731.

It is a super-2 number, since 2×13706238² = 375721920225288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6133 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (707112).

Almost surely, 2^13706238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13706238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16970688).

13706238 is an abundant number, since it is smaller than the sum of its proper divisors (20235138).

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

13706238 is a wasteful number, since it uses less digits than its factorization.

13706238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13706238 is about 3702.1936740263. The cubic root of 13706238 is about 239.3165625973.

Adding to 13706238 its reverse (83260731), we get a palindrome (96966969).

The spelling of 13706238 in words is "thirteen million, seven hundred six thousand, two hundred thirty-eight".