1285706080 has 48 divisors (see below), whose sum is σ = 3050175744. Its totient is φ = 512133120.

The previous prime is 1285706077. The next prime is 1285706083. The reversal of 1285706080 is 806075821.

It is an interprime number because it is at equal distance from previous prime (1285706077) and next prime (1285706083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285706083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21889 + ... + 55231.

It is an arithmetic number, because the mean of its divisors is an integer number (63545328).

Almost surely, 2^1285706080 is an apocalyptic number.

1285706080 is a gapful number since it is divisible by the number (10) 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 1285706080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1525087872).

1285706080 is an abundant number, since it is smaller than the sum of its proper divisors (1764469664).

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

1285706080 is a wasteful number, since it uses less digits than its factorization.

1285706080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33599 (or 33591 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1285706080 is about 35856.7438566304. The cubic root of 1285706080 is about 1087.3780596969.

The spelling of 1285706080 in words is "one billion, two hundred eighty-five million, seven hundred six thousand, eighty".