1285712086 has 8 divisors (see below), whose sum is σ = 1928816064. Its totient is φ = 642773400.

The previous prime is 1285712069. The next prime is 1285712089. The reversal of 1285712086 is 6802175821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285712089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19590 + ... + 54361.

It is an arithmetic number, because the mean of its divisors is an integer number (241102008).

Almost surely, 2^1285712086 is an apocalyptic number.

1285712086 is a deficient number, since it is larger than the sum of its proper divisors (643103978).

1285712086 is an equidigital number, since it uses as much as digits as its factorization.

1285712086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82646.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 1285712086 is about 35856.8276064685. The cubic root of 1285712086 is about 1087.3797528735.

The spelling of 1285712086 in words is "one billion, two hundred eighty-five million, seven hundred twelve thousand, eighty-six".