1028500642 has 16 divisors (see below), whose sum is σ = 1681444800. Its totient is φ = 468972432.

The previous prime is 1028500633. The next prime is 1028500679. The reversal of 1028500642 is 2460058201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028500642.

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, 236142 + ... + 240457.

It is an arithmetic number, because the mean of its divisors is an integer number (105090300).

Almost surely, 2^1028500642 is an apocalyptic number.

1028500642 is a deficient number, since it is larger than the sum of its proper divisors (652944158).

1028500642 is a wasteful number, since it uses less digits than its factorization.

1028500642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476697.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1028500642 is about 32070.2454309287. The cubic root of 1028500642 is about 1009.4113623914.

Adding to 1028500642 its reverse (2460058201), we get a palindrome (3488558843).

The spelling of 1028500642 in words is "one billion, twenty-eight million, five hundred thousand, six hundred forty-two".