13023645 has 16 divisors (see below), whose sum is σ = 21935040. Its totient is φ = 6580224.

The previous prime is 13023641. The next prime is 13023677. The reversal of 13023645 is 54632031.

It is a happy number.

It is not a de Polignac number, because 13023645 - 2² = 13023641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22564 + ... + 23133.

It is an arithmetic number, because the mean of its divisors is an integer number (1370940).

Almost surely, 2^13023645 is an apocalyptic number.

13023645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13023645 is a deficient number, since it is larger than the sum of its proper divisors (8911395).

13023645 is a wasteful number, since it uses less digits than its factorization.

13023645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45724.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 13023645 is about 3608.8287573671. The cubic root of 13023645 is about 235.2759396312.

Adding to 13023645 its reverse (54632031), we get a palindrome (67655676).

The spelling of 13023645 in words is "thirteen million, twenty-three thousand, six hundred forty-five".