162231428 has 6 divisors (see below), whose sum is σ = 283905006. Its totient is φ = 81115712.

The previous prime is 162231403. The next prime is 162231431. The reversal of 162231428 is 824132261.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108326464 + 53904964 = 10408^2 + 7342^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 162231428.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20278925 + ... + 20278932.

It is an arithmetic number, because the mean of its divisors is an integer number (47317501).

Almost surely, 2^162231428 is an apocalyptic number.

It is an amenable number.

162231428 is a deficient number, since it is larger than the sum of its proper divisors (121673578).

162231428 is a wasteful number, since it uses less digits than its factorization.

162231428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40557861 (or 40557859 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 162231428 is about 12737.0101672253. The cubic root of 162231428 is about 545.3956423498.

Adding to 162231428 its reverse (824132261), we get a palindrome (986363689).

The spelling of 162231428 in words is "one hundred sixty-two million, two hundred thirty-one thousand, four hundred twenty-eight".