1287356160 has 72 divisors (see below), whose sum is σ = 4111506000. Its totient is φ = 343293952.

The previous prime is 1287356149. The next prime is 1287356177. The reversal of 1287356160 is 616537821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163785 + ... + 171464.

It is an arithmetic number, because the mean of its divisors is an integer number (57104250).

Almost surely, 2^1287356160 is an apocalyptic number.

1287356160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287356160 is an abundant number, since it is smaller than the sum of its proper divisors (2824149840).

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

1287356160 is an equidigital number, since it uses as much as digits as its factorization.

1287356160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335273 (or 335259 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1287356160 is about 35879.7458184977. The cubic root of 1287356160 is about 1087.8430425253.

The spelling of 1287356160 in words is "one billion, two hundred eighty-seven million, three hundred fifty-six thousand, one hundred sixty".