13694728 has 16 divisors (see below), whose sum is σ = 26563500. Its totient is φ = 6611136.

The previous prime is 13694671. The next prime is 13694743. The reversal of 13694728 is 82749631.

It can be written as a sum of positive squares in 2 ways, for example, as 13235044 + 459684 = 3638^2 + 678^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 29283 + ... + 29746.

Almost surely, 2^13694728 is an apocalyptic number.

It is an amenable number.

13694728 is a deficient number, since it is larger than the sum of its proper divisors (12868772).

13694728 is a wasteful number, since it uses less digits than its factorization.

13694728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59064 (or 59060 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 13694728 is about 3700.6388637639. The cubic root of 13694728 is about 239.2495540559.

It can be divided in two parts, 136 and 94728, that added together give a square (94864 = 308²).

The spelling of 13694728 in words is "thirteen million, six hundred ninety-four thousand, seven hundred twenty-eight".