13706426 has 4 divisors (see below), whose sum is σ = 20559642. Its totient is φ = 6853212.

The previous prime is 13706419. The next prime is 13706443. The reversal of 13706426 is 62460731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62460731 = 857 ⋅72883.

It can be written as a sum of positive squares in only one way, i.e., 13697401 + 9025 = 3701^2 + 95^2 .

It is a super-2 number, since 2×13706426² = 375732227386952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3426605 + ... + 3426608.

Almost surely, 2^13706426 is an apocalyptic number.

13706426 is a deficient number, since it is larger than the sum of its proper divisors (6853216).

13706426 is an equidigital number, since it uses as much as digits as its factorization.

13706426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853215.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13706426 is about 3702.2190642910. The cubic root of 13706426 is about 239.3176567781.

The spelling of 13706426 in words is "thirteen million, seven hundred six thousand, four hundred twenty-six".