1285539560 has 32 divisors (see below), whose sum is σ = 2896508160. Its totient is φ = 513496896.

The previous prime is 1285539553. The next prime is 1285539583. The reversal of 1285539560 is 659355821.

It is a super-2 number, since 2×1285539560² = 3305223920649987200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6977 + ... + 51183.

It is an arithmetic number, because the mean of its divisors is an integer number (90515880).

Almost surely, 2^1285539560 is an apocalyptic number.

1285539560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285539560 is an abundant number, since it is smaller than the sum of its proper divisors (1610968600).

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

1285539560 is a wasteful number, since it uses less digits than its factorization.

1285539560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44945 (or 44941 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The square root of 1285539560 is about 35854.4217635705. The cubic root of 1285539560 is about 1087.3311132460.

The spelling of 1285539560 in words is "one billion, two hundred eighty-five million, five hundred thirty-nine thousand, five hundred sixty".