1428864560 has 20 divisors (see below), whose sum is σ = 3322110288. Its totient is φ = 571545792.

The previous prime is 1428864559. The next prime is 1428864571. The reversal of 1428864560 is 654688241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 8930324 + ... + 8930483.

Almost surely, 2^1428864560 is an apocalyptic number.

1428864560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428864560 is an abundant number, since it is smaller than the sum of its proper divisors (1893245728).

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

1428864560 is a wasteful number, since it uses less digits than its factorization.

1428864560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860820 (or 17860814 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 1428864560 is about 37800.3248663289. The cubic root of 1428864560 is about 1126.3249075271.

The spelling of 1428864560 in words is "one billion, four hundred twenty-eight million, eight hundred sixty-four thousand, five hundred sixty".