1286773488 has 480 divisors, whose sum is σ = 4939683840. Its totient is φ = 301916160.

The previous prime is 1286773487. The next prime is 1286773627. The reversal of 1286773488 is 8843776821.

It is a happy number.

1286773488 is a `hidden beast` number, since 12 + 86 + 7 + 73 + 488 = 666.

It is a super-2 number, since 2×1286773488² = 3311572018839372288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286773483) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11387320 + ... + 11387432.

It is an arithmetic number, because the mean of its divisors is an integer number (10291008).

Almost surely, 2^1286773488 is an apocalyptic number.

1286773488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286773488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2469841920).

1286773488 is an abundant number, since it is smaller than the sum of its proper divisors (3652910352).

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

1286773488 is a wasteful number, since it uses less digits than its factorization.

1286773488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 228 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 1286773488 is about 35871.6251095486. The cubic root of 1286773488 is about 1087.6788943910.

The spelling of 1286773488 in words is "one billion, two hundred eighty-six million, seven hundred seventy-three thousand, four hundred eighty-eight".