13722293 has 6 divisors (see below), whose sum is σ = 14859234. Its totient is φ = 12666576.

The previous prime is 13722277. The next prime is 13722311. The reversal of 13722293 is 39222731.

13722293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 47089 + 13675204 = 217^2 + 3698^2 .

It is not a de Polignac number, because 13722293 - 2⁴ = 13722277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13725293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40430 + ... + 40767.

It is an arithmetic number, because the mean of its divisors is an integer number (2476539).

Almost surely, 2^13722293 is an apocalyptic number.

13722293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13722293 is a deficient number, since it is larger than the sum of its proper divisors (1136941).

13722293 is an equidigital number, since it uses as much as digits as its factorization.

13722293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81223 (or 81210 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 13722293 is about 3704.3613484648. The cubic root of 13722293 is about 239.4099684410.

The spelling of 13722293 in words is "thirteen million, seven hundred twenty-two thousand, two hundred ninety-three".