1280288664 has 48 divisors (see below), whose sum is σ = 3473335320. Its totient is φ = 426038400.

The previous prime is 1280288657. The next prime is 1280288671. The reversal of 1280288664 is 4668820821.

1280288664 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1280288657) and next prime (1280288671).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28479 + ... + 58065.

Almost surely, 2^1280288664 is an apocalyptic number.

It is an amenable number.

1280288664 is an abundant number, since it is smaller than the sum of its proper divisors (2193046656).

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

1280288664 is a wasteful number, since it uses less digits than its factorization.

1280288664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30200 (or 30193 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 1280288664 is about 35781.1216146168. The cubic root of 1280288664 is about 1085.8486607788.

The spelling of 1280288664 in words is "one billion, two hundred eighty million, two hundred eighty-eight thousand, six hundred sixty-four".