15222436 has 12 divisors (see below), whose sum is σ = 26819100. Its totient is φ = 7559840.

The previous prime is 15222433. The next prime is 15222437. The reversal of 15222436 is 63422251.

It can be written as a sum of positive squares in 2 ways, for example, as 4040100 + 11182336 = 2010^2 + 3344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15222436.

It is not an unprimeable number, because it can be changed into a prime (15222433) 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, 12175 + ... + 13366.

It is an arithmetic number, because the mean of its divisors is an integer number (2234925).

Almost surely, 2^15222436 is an apocalyptic number.

It is an amenable number.

15222436 is a deficient number, since it is larger than the sum of its proper divisors (11596664).

15222436 is a wasteful number, since it uses less digits than its factorization.

15222436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25694 (or 25692 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 15222436 is about 3901.5940332126. The cubic root of 15222436 is about 247.8342848877.

Adding to 15222436 its reverse (63422251), we get a palindrome (78644687).

The spelling of 15222436 in words is "fifteen million, two hundred twenty-two thousand, four hundred thirty-six".