13645400 has 24 divisors (see below), whose sum is σ = 31726020. Its totient is φ = 5458080.

The previous prime is 13645393. The next prime is 13645447. The reversal of 13645400 is 454631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33914 + ... + 34313.

Almost surely, 2^13645400 is an apocalyptic number.

13645400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13645400 is an abundant number, since it is smaller than the sum of its proper divisors (18080620).

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

13645400 is a wasteful number, since it uses less digits than its factorization.

13645400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68243 (or 68234 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13645400 is about 3693.9680561694. The cubic root of 13645400 is about 238.9619518921.

The spelling of 13645400 in words is "thirteen million, six hundred forty-five thousand, four hundred".