13145456 has 20 divisors (see below), whose sum is σ = 25642704. Its totient is φ = 6528000.

The previous prime is 13145449. The next prime is 13145479. The reversal of 13145456 is 65454131.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305 + ... + 5136.

Almost surely, 2^13145456 is an apocalyptic number.

13145456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13145456 is a deficient number, since it is larger than the sum of its proper divisors (12497248).

13145456 is a wasteful number, since it uses less digits than its factorization.

13145456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5594 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 13145456 is about 3625.6662835953. Note that the first 3 decimals coincide. The cubic root of 13145456 is about 236.0071816258.

Adding to 13145456 its reverse (65454131), we get a palindrome (78599587).

The spelling of 13145456 in words is "thirteen million, one hundred forty-five thousand, four hundred fifty-six".