13403457 has 24 divisors (see below), whose sum is σ = 20502144. Its totient is φ = 8420544.

The previous prime is 13403449. The next prime is 13403461. The reversal of 13403457 is 75430431.

It is not a de Polignac number, because 13403457 - 2³ = 13403449 is a prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13403457.

It is not an unprimeable number, because it can be changed into a prime (13403437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14668 + ... + 15554.

It is an arithmetic number, because the mean of its divisors is an integer number (854256).

Almost surely, 2^13403457 is an apocalyptic number.

It is an amenable number.

13403457 is a deficient number, since it is larger than the sum of its proper divisors (7098687).

13403457 is a wasteful number, since it uses less digits than its factorization.

13403457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 13403457 is about 3661.0732033107. The cubic root of 13403457 is about 237.5411976548.

Adding to 13403457 its reverse (75430431), we get a palindrome (88833888).

The spelling of 13403457 in words is "thirteen million, four hundred three thousand, four hundred fifty-seven".