13705428 has 36 divisors (see below), whose sum is σ = 35154560. Its totient is φ = 4152720.

The previous prime is 13705427. The next prime is 13705457. The reversal of 13705428 is 82450731.

It is a junction number, because it is equal to n+sod(n) for n = 13705395 and 13705404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13705423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3268 + ... + 6171.

Almost surely, 2^13705428 is an apocalyptic number.

It is an amenable number.

13705428 is an abundant number, since it is smaller than the sum of its proper divisors (21449132).

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

13705428 is a wasteful number, since it uses less digits than its factorization.

13705428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468 (or 9455 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 13705428 is about 3702.0842778089. The cubic root of 13705428 is about 239.3118481932.

The spelling of 13705428 in words is "thirteen million, seven hundred five thousand, four hundred twenty-eight".