13402305 has 48 divisors (see below), whose sum is σ = 26817024. Its totient is φ = 6065280.

The previous prime is 13402303. The next prime is 13402309. The reversal of 13402305 is 50320431.

It is not a de Polignac number, because 13402305 - 2¹ = 13402303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13402303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49320 + ... + 49590.

It is an arithmetic number, because the mean of its divisors is an integer number (558688).

Almost surely, 2^13402305 is an apocalyptic number.

13402305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13402305 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

13402305 is a wasteful number, since it uses less digits than its factorization.

13402305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13402305 is about 3660.9158690142. The cubic root of 13402305 is about 237.5343920647.

Adding to 13402305 its reverse (50320431), we get a palindrome (63722736).

The spelling of 13402305 in words is "thirteen million, four hundred two thousand, three hundred five".