1279770960 has 160 divisors (see below), whose sum is σ = 4298974848. Its totient is φ = 313067520.

The previous prime is 1279770929. The next prime is 1279770971. The reversal of 1279770960 is 690779721.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538575 + ... + 540945.

Almost surely, 2^1279770960 is an apocalyptic number.

1279770960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279770960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149487424).

1279770960 is an abundant number, since it is smaller than the sum of its proper divisors (3019203888).

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

1279770960 is a wasteful number, since it uses less digits than its factorization.

1279770960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2567 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 48.

The square root of 1279770960 is about 35773.8865654824. The cubic root of 1279770960 is about 1085.7022812945.

The spelling of 1279770960 in words is "one billion, two hundred seventy-nine million, seven hundred seventy thousand, nine hundred sixty".