1288230870 has 16 divisors (see below), whose sum is σ = 3091754160. Its totient is φ = 343528224.

The previous prime is 1288230863. The next prime is 1288230877. The reversal of 1288230870 is 780328821.

It is an interprime number because it is at equal distance from previous prime (1288230863) and next prime (1288230877).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288230877) by changing a digit.

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, 21470485 + ... + 21470544.

It is an arithmetic number, because the mean of its divisors is an integer number (193234635).

Almost surely, 2^1288230870 is an apocalyptic number.

1288230870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1288230870 is an abundant number, since it is smaller than the sum of its proper divisors (1803523290).

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

1288230870 is a wasteful number, since it uses less digits than its factorization.

1288230870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42941039.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1288230870 is about 35891.9332162535. The cubic root of 1288230870 is about 1088.0893695287.

The spelling of 1288230870 in words is "one billion, two hundred eighty-eight million, two hundred thirty thousand, eight hundred seventy".