1028412638 has 24 divisors (see below), whose sum is σ = 1705150440. Its totient is φ = 464829200.

The previous prime is 1028412629. The next prime is 1028412647. The reversal of 1028412638 is 8362148201.

It is an interprime number because it is at equal distance from previous prime (1028412629) and next prime (1028412647).

It is a junction number, because it is equal to n+sod(n) for n = 1028412598 and 1028412607.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 31448 + ... + 55188.

It is an arithmetic number, because the mean of its divisors is an integer number (71047935).

Almost surely, 2^1028412638 is an apocalyptic number.

1028412638 is a deficient number, since it is larger than the sum of its proper divisors (676737802).

1028412638 is a wasteful number, since it uses less digits than its factorization.

1028412638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23944 (or 23933 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1028412638 is about 32068.8733509614. The cubic root of 1028412638 is about 1009.3825713637.

It can be divided in two parts, 10284 and 12638, that added together give a palindrome (22922).

The spelling of 1028412638 in words is "one billion, twenty-eight million, four hundred twelve thousand, six hundred thirty-eight".