13643022 has 16 divisors (see below), whose sum is σ = 27440640. Its totient is φ = 4521912.

The previous prime is 13643017. The next prime is 13643023. The reversal of 13643022 is 22034631.

It is a happy number.

It is a super-2 number, since 2×13643022² = 372264098584968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13643022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5278 + ... + 7425.

It is an arithmetic number, because the mean of its divisors is an integer number (1715040).

Almost surely, 2^13643022 is an apocalyptic number.

13643022 is an abundant number, since it is smaller than the sum of its proper divisors (13797618).

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

13643022 is a wasteful number, since it uses less digits than its factorization.

13643022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12887.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 13643022 is about 3693.6461660533. The cubic root of 13643022 is about 238.9480696916.

Adding to 13643022 its reverse (22034631), we get a palindrome (35677653).

The spelling of 13643022 in words is "thirteen million, six hundred forty-three thousand, twenty-two".