1280164760 has 32 divisors (see below), whose sum is σ = 3291852960. Its totient is φ = 438913536.

The previous prime is 1280164757. The next prime is 1280164783. The reversal of 1280164760 is 674610821.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1280164760.

It is a congruent number.

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, 2285729 + ... + 2286288.

It is an arithmetic number, because the mean of its divisors is an integer number (102870405).

Almost surely, 2^1280164760 is an apocalyptic number.

1280164760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280164760 is an abundant number, since it is smaller than the sum of its proper divisors (2011688200).

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

1280164760 is a wasteful number, since it uses less digits than its factorization.

1280164760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572035 (or 4572031 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1280164760 is about 35779.3901569046. The cubic root of 1280164760 is about 1085.8136308316.

The spelling of 1280164760 in words is "one billion, two hundred eighty million, one hundred sixty-four thousand, seven hundred sixty".