12538922 has 16 divisors (see below), whose sum is σ = 20587392. Its totient is φ = 5680320.

The previous prime is 12538921. The next prime is 12538931. The reversal of 12538922 is 22983521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12538921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7298 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (1286712).

Almost surely, 2^12538922 is an apocalyptic number.

12538922 is a deficient number, since it is larger than the sum of its proper divisors (8048470).

12538922 is a wasteful number, since it uses less digits than its factorization.

12538922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its digits is 8640, while the sum is 32.

The square root of 12538922 is about 3541.0340297715. The cubic root of 12538922 is about 232.3200719923.

The spelling of 12538922 in words is "twelve million, five hundred thirty-eight thousand, nine hundred twenty-two".