13435857 has 6 divisors (see below), whose sum is σ = 19407362. Its totient is φ = 8957232.

The previous prime is 13435819. The next prime is 13435859. The reversal of 13435857 is 75853431.

It can be written as a sum of positive squares in only one way, i.e., 8346321 + 5089536 = 2889^2 + 2256^2 .

It is not a de Polignac number, because 13435857 - 2²⁰ = 12387281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13435859) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 746428 + ... + 746445.

Almost surely, 2^13435857 is an apocalyptic number.

It is an amenable number.

13435857 is a deficient number, since it is larger than the sum of its proper divisors (5971505).

13435857 is a wasteful number, since it uses less digits than its factorization.

13435857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492879 (or 1492876 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 13435857 is about 3665.4954644632. The cubic root of 13435857 is about 237.7324453730.

The spelling of 13435857 in words is "thirteen million, four hundred thirty-five thousand, eight hundred fifty-seven".