1285130860 has 24 divisors (see below), whose sum is σ = 2906373456. Its totient is φ = 474509760.

The previous prime is 1285130851. The next prime is 1285130867. The reversal of 1285130860 is 680315821.

1285130860 = T₄₂₂ + T₄₂₃ + ... + T₁₉₈₁.

It is a super-2 number, since 2×1285130860² = 3303122654648679200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1285130867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471146 + ... + 2471665.

It is an arithmetic number, because the mean of its divisors is an integer number (121098894).

Almost surely, 2^1285130860 is an apocalyptic number.

1285130860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285130860 is an abundant number, since it is smaller than the sum of its proper divisors (1621242596).

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

1285130860 is a wasteful number, since it uses less digits than its factorization.

1285130860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942833 (or 4942831 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1285130860 is about 35848.7218740083. The cubic root of 1285130860 is about 1087.2158725740.

The spelling of 1285130860 in words is "one billion, two hundred eighty-five million, one hundred thirty thousand, eight hundred sixty".