1642087028 has 12 divisors (see below), whose sum is σ = 2882336352. Its totient is φ = 818562360.

The previous prime is 1642087009. The next prime is 1642087049. The reversal of 1642087028 is 8207802461.

It is a junction number, because it is equal to n+sod(n) for n = 1642086982 and 1642087000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618800 + ... + 621447.

It is an arithmetic number, because the mean of its divisors is an integer number (240194696).

Almost surely, 2^1642087028 is an apocalyptic number.

It is an amenable number.

1642087028 is a deficient number, since it is larger than the sum of its proper divisors (1240249324).

1642087028 is a wasteful number, since it uses less digits than its factorization.

1642087028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240582 (or 1240580 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 1642087028 is about 40522.6730115376. The cubic root of 1642087028 is about 1179.7737352242.

Adding to 1642087028 its reverse (8207802461), we get a palindrome (9849889489).

The spelling of 1642087028 in words is "one billion, six hundred forty-two million, eighty-seven thousand, twenty-eight".