1428168106 has 16 divisors (see below), whose sum is σ = 2206423944. Its totient is φ = 692803584.

The previous prime is 1428168089. The next prime is 1428168107. The reversal of 1428168106 is 6018618241.

It can be written as a sum of positive squares in 4 ways, for example, as 1191285225 + 236882881 = 34515^2 + 15391^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (1428168107) 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, 1215 + ... + 53458.

Almost surely, 2^1428168106 is an apocalyptic number.

1428168106 is a deficient number, since it is larger than the sum of its proper divisors (778255838).

1428168106 is a wasteful number, since it uses less digits than its factorization.

1428168106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55065.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1428168106 is about 37791.1114681746. Note that the first 3 decimals coincide. The cubic root of 1428168106 is about 1126.1418808562.

The spelling of 1428168106 in words is "one billion, four hundred twenty-eight million, one hundred sixty-eight thousand, one hundred six".