1288970 has 16 divisors (see below), whose sum is σ = 2337768. Its totient is φ = 511680.

The previous prime is 1288967. The next prime is 1288981. The reversal of 1288970 is 798821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 769129 + 519841 = 877^2 + 721^2 .

It is a super-2 number, since 2×1288970² = 3322887321800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288970.

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, 1160 + ... + 1980.

2^1288970 is an apocalyptic number.

1288970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1288970 is a deficient number, since it is larger than the sum of its proper divisors (1048798).

1288970 is a wasteful number, since it uses less digits than its factorization.

1288970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1288970 is about 1135.3281463965. The cubic root of 1288970 is about 108.8297428956.

The spelling of 1288970 in words is "one million, two hundred eighty-eight thousand, nine hundred seventy".