13438722 has 16 divisors (see below), whose sum is σ = 29320992. Its totient is φ = 4072320.

The previous prime is 13438709. The next prime is 13438723. The reversal of 13438722 is 22783431.

It is a self number, because there is not a number n which added to its sum of digits gives 13438722.

It is not an unprimeable number, because it can be changed into a prime (13438723) 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, 101743 + ... + 101874.

It is an arithmetic number, because the mean of its divisors is an integer number (1832562).

Almost surely, 2^13438722 is an apocalyptic number.

13438722 is an abundant number, since it is smaller than the sum of its proper divisors (15882270).

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

13438722 is a wasteful number, since it uses less digits than its factorization.

13438722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203633.

The product of its digits is 8064, while the sum is 30.

The square root of 13438722 is about 3665.8862502811. The cubic root of 13438722 is about 237.7493418277.

The spelling of 13438722 in words is "thirteen million, four hundred thirty-eight thousand, seven hundred twenty-two".