15401222 has 8 divisors (see below), whose sum is σ = 23306616. Its totient is φ = 7632352.

The previous prime is 15401209. The next prime is 15401227. The reversal of 15401222 is 22210451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15401222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15401227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33848 + ... + 34299.

It is an arithmetic number, because the mean of its divisors is an integer number (2913327).

Almost surely, 2^15401222 is an apocalyptic number.

15401222 is a deficient number, since it is larger than the sum of its proper divisors (7905394).

15401222 is a wasteful number, since it uses less digits than its factorization.

15401222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68262.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15401222 is about 3924.4390681982. The cubic root of 15401222 is about 248.8007739591.

Adding to 15401222 its reverse (22210451), we get a palindrome (37611673).

The spelling of 15401222 in words is "fifteen million, four hundred one thousand, two hundred twenty-two".