1288860284 has 6 divisors (see below), whose sum is σ = 2255505504. Its totient is φ = 644430140.

The previous prime is 1288860283. The next prime is 1288860289. The reversal of 1288860284 is 4820688821.

It is a super-2 number, since 2×1288860284² = 3322321663345121312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288860283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161107532 + ... + 161107539.

It is an arithmetic number, because the mean of its divisors is an integer number (375917584).

Almost surely, 2^1288860284 is an apocalyptic number.

It is an amenable number.

1288860284 is a deficient number, since it is larger than the sum of its proper divisors (966645220).

1288860284 is a wasteful number, since it uses less digits than its factorization.

1288860284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322215075 (or 322215073 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The square root of 1288860284 is about 35900.7003274309. The cubic root of 1288860284 is about 1088.2665497714.

The spelling of 1288860284 in words is "one billion, two hundred eighty-eight million, eight hundred sixty thousand, two hundred eighty-four".