1288059440 has 40 divisors (see below), whose sum is σ = 3058464960. Its totient is φ = 504260096.

The previous prime is 1288059439. The next prime is 1288059467. The reversal of 1288059440 is 449508821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1288059440² = 3318194241946227200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167525 + ... + 175044.

It is an arithmetic number, because the mean of its divisors is an integer number (76461624).

Almost surely, 2^1288059440 is an apocalyptic number.

1288059440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1288059440 is an abundant number, since it is smaller than the sum of its proper divisors (1770405520).

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

1288059440 is a wasteful number, since it uses less digits than its factorization.

1288059440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342629 (or 342623 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1288059440 is about 35889.5449957226. The cubic root of 1288059440 is about 1088.0411019291.

The spelling of 1288059440 in words is "one billion, two hundred eighty-eight million, fifty-nine thousand, four hundred forty".