1280471296 has 36 divisors (see below), whose sum is σ = 2752558732. Its totient is φ = 590985216.

The previous prime is 1280471273. The next prime is 1280471299. The reversal of 1280471296 is 6921740821.

It can be written as a sum of positive squares in 2 ways, for example, as 312016896 + 968454400 = 17664^2 + 31120^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1280471299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189051 + ... + 195706.

Almost surely, 2^1280471296 is an apocalyptic number.

1280471296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1280471296 is an abundant number, since it is smaller than the sum of its proper divisors (1472087436).

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

1280471296 is an equidigital number, since it uses as much as digits as its factorization.

1280471296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384786 (or 384772 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1280471296 is about 35783.6735956497. The cubic root of 1280471296 is about 1085.9002900947.

It can be divided in two parts, 12804 and 71296, that added together give a square (84100 = 290²).

The spelling of 1280471296 in words is "one billion, two hundred eighty million, four hundred seventy-one thousand, two hundred ninety-six".