1538606028 has 12 divisors (see below), whose sum is σ = 3590080760. Its totient is φ = 512868672.

The previous prime is 1538606021. The next prime is 1538606081. The reversal of 1538606028 is 8206068351.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1538606021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64108573 + ... + 64108596.

Almost surely, 2^1538606028 is an apocalyptic number.

It is an amenable number.

1538606028 is an abundant number, since it is smaller than the sum of its proper divisors (2051474732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1538606028 is a wasteful number, since it uses less digits than its factorization.

1538606028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128217176 (or 128217174 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1538606028 is about 39225.0688718325. The cubic root of 1538606028 is about 1154.4518123470.

The spelling of 1538606028 in words is "one billion, five hundred thirty-eight million, six hundred six thousand, twenty-eight".