13770426 has 8 divisors (see below), whose sum is σ = 27540864. Its totient is φ = 4590140.

The previous prime is 13770409. The next prime is 13770437. The reversal of 13770426 is 62407731.

It is a sphenic number, since it is the product of 3 distinct primes.

13770426 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13770393 and 13770402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147530 + ... + 1147541.

It is an arithmetic number, because the mean of its divisors is an integer number (3442608).

Almost surely, 2^13770426 is an apocalyptic number.

13770426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13770426 is a wasteful number, since it uses less digits than its factorization.

13770426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295076.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 13770426 is about 3710.8524627099. The cubic root of 13770426 is about 239.6895639069.

It can be divided in two parts, 13770 and 426, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 13770426 in words is "thirteen million, seven hundred seventy thousand, four hundred twenty-six".