1284897360 has 80 divisors (see below), whose sum is σ = 4080363840. Its totient is φ = 334279680.

The previous prime is 1284897359. The next prime is 1284897379. The reversal of 1284897360 is 637984821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1284897360² = 3301922451469939200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55450 + ... + 75129.

It is an arithmetic number, because the mean of its divisors is an integer number (51004548).

Almost surely, 2^1284897360 is an apocalyptic number.

1284897360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284897360 is an abundant number, since it is smaller than the sum of its proper divisors (2795466480).

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

1284897360 is a wasteful number, since it uses less digits than its factorization.

1284897360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130636 (or 130630 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 1284897360 is about 35845.4649851275. The cubic root of 1284897360 is about 1087.1500218785.

The spelling of 1284897360 in words is "one billion, two hundred eighty-four million, eight hundred ninety-seven thousand, three hundred sixty".