1283860560 has 80 divisors (see below), whose sum is σ = 3983745024. Its totient is φ = 342038016.

The previous prime is 1283860549. The next prime is 1283860577. The reversal of 1283860560 is 650683821.

It is a happy number.

It is a Cunningham number, because it is equal to 35831²-1.

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

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, 356529 + ... + 360111.

Almost surely, 2^1283860560 is an apocalyptic number.

1283860560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1283860560 is an abundant number, since it is smaller than the sum of its proper divisors (2699884464).

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

1283860560 is a wasteful number, since it uses less digits than its factorization.

1283860560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092 (or 5086 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1283860560 is about 35830.9999860456. Note that the first 4 decimals coincide. The cubic root of 1283860560 is about 1086.8575314725.

The spelling of 1283860560 in words is "one billion, two hundred eighty-three million, eight hundred sixty thousand, five hundred sixty".