13145804 has 24 divisors (see below), whose sum is σ = 27004320. Its totient is φ = 5481216.

The previous prime is 13145801. The next prime is 13145819. The reversal of 13145804 is 40854131.

It is not an unprimeable number, because it can be changed into a prime (13145801) 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 7 ways as a sum of consecutive naturals, for example, 5309 + ... + 7380.

It is an arithmetic number, because the mean of its divisors is an integer number (1125180).

Almost surely, 2^13145804 is an apocalyptic number.

13145804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13145804 is an abundant number, since it is smaller than the sum of its proper divisors (13858516).

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

13145804 is a wasteful number, since it uses less digits than its factorization.

13145804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12737 (or 12735 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13145804 is about 3625.7142744568. The cubic root of 13145804 is about 236.0092642155.

Adding to 13145804 its reverse (40854131), we get a palindrome (53999935).

The spelling of 13145804 in words is "thirteen million, one hundred forty-five thousand, eight hundred four".