1283775140 has 24 divisors (see below), whose sum is σ = 2733901632. Its totient is φ = 506276960.

The previous prime is 1283775139. The next prime is 1283775167. The reversal of 1283775140 is 415773821.

It is a super-2 number, since 2×1283775140² = 3296157220164039200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1283775094 and 1283775103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450614 + ... + 453453.

It is an arithmetic number, because the mean of its divisors is an integer number (113912568).

Almost surely, 2^1283775140 is an apocalyptic number.

1283775140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1283775140 is an abundant number, since it is smaller than the sum of its proper divisors (1450126492).

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

1283775140 is a wasteful number, since it uses less digits than its factorization.

1283775140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904147 (or 904145 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1283775140 is about 35829.8079816233. The cubic root of 1283775140 is about 1086.8334267184.

The spelling of 1283775140 in words is "one billion, two hundred eighty-three million, seven hundred seventy-five thousand, one hundred forty".