1268330440 has 32 divisors (see below), whose sum is σ = 3073263480. Its totient is φ = 468306432.

The previous prime is 1268330411. The next prime is 1268330461. The reversal of 1268330440 is 440338621.

It can be written as a sum of positive squares in 4 ways, for example, as 549339844 + 718990596 = 23438^2 + 26814^2 .

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, 1219029 + ... + 1220068.

Almost surely, 2^1268330440 is an apocalyptic number.

1268330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268330440 is an abundant number, since it is smaller than the sum of its proper divisors (1804933040).

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

1268330440 is a wasteful number, since it uses less digits than its factorization.

1268330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439121 (or 2439117 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1268330440 is about 35613.6271671393. The cubic root of 1268330440 is about 1082.4573787549.

The spelling of 1268330440 in words is "one billion, two hundred sixty-eight million, three hundred thirty thousand, four hundred forty".