1020428538 has 16 divisors (see below), whose sum is σ = 2041893120. Its totient is φ = 339970176.

The previous prime is 1020428509. The next prime is 1020428593. The reversal of 1020428538 is 8358240201.

1020428538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1020428499 and 1020428508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30058 + ... + 54261.

It is an arithmetic number, because the mean of its divisors is an integer number (127618320).

Almost surely, 2^1020428538 is an apocalyptic number.

1020428538 is an abundant number, since it is smaller than the sum of its proper divisors (1021464582).

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

1020428538 is a wasteful number, since it uses less digits than its factorization.

1020428538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86341.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1020428538 is about 31944.1471634476. The cubic root of 1020428538 is about 1006.7636623983.

Adding to 1020428538 its reverse (8358240201), we get a palindrome (9378668739).

The spelling of 1020428538 in words is "one billion, twenty million, four hundred twenty-eight thousand, five hundred thirty-eight".