13205828 has 12 divisors (see below), whose sum is σ = 23136960. Its totient is φ = 6595272.

The previous prime is 13205827. The next prime is 13205849. The reversal of 13205828 is 82850231.

It is a self number, because there is not a number n which added to its sum of digits gives 13205828.

It is not an unprimeable number, because it can be changed into a prime (13205827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (1928080).

Almost surely, 2^13205828 is an apocalyptic number.

It is an amenable number.

13205828 is a deficient number, since it is larger than the sum of its proper divisors (9931132).

13205828 is a wasteful number, since it uses less digits than its factorization.

13205828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3824 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13205828 is about 3633.9823885099. The cubic root of 13205828 is about 236.3679265314.

The spelling of 13205828 in words is "thirteen million, two hundred five thousand, eight hundred twenty-eight".