13947426 has 12 divisors (see below), whose sum is σ = 30219462. Its totient is φ = 4649136.

The previous prime is 13947413. The next prime is 13947431. The reversal of 13947426 is 62474931.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 2556801 = 3375^2 + 1599^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387411 + ... + 387446.

Almost surely, 2^13947426 is an apocalyptic number.

13947426 is an abundant number, since it is smaller than the sum of its proper divisors (16272036).

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

13947426 is a wasteful number, since it uses less digits than its factorization.

13947426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774865 (or 774862 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 13947426 is about 3734.6252824079. The cubic root of 13947426 is about 240.7121555534.

The spelling of 13947426 in words is "thirteen million, nine hundred forty-seven thousand, four hundred twenty-six".