1428872860 has 24 divisors (see below), whose sum is σ = 3002960016. Its totient is φ = 571105920.

The previous prime is 1428872849. The next prime is 1428872867. The reversal of 1428872860 is 682788241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428872860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428872867) 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 7 ways as a sum of consecutive naturals, for example, 622 + ... + 53461.

It is an arithmetic number, because the mean of its divisors is an integer number (125123334).

Almost surely, 2^1428872860 is an apocalyptic number.

1428872860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428872860 is an abundant number, since it is smaller than the sum of its proper divisors (1574087156).

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

1428872860 is a wasteful number, since it uses less digits than its factorization.

1428872860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55413 (or 55411 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 1428872860 is about 37800.4346535857. The cubic root of 1428872860 is about 1126.3270883913.

The spelling of 1428872860 in words is "one billion, four hundred twenty-eight million, eight hundred seventy-two thousand, eight hundred sixty".