1268504540 has 48 divisors (see below), whose sum is σ = 2703183840. Its totient is φ = 499952640.

The previous prime is 1268504539. The next prime is 1268504557. The reversal of 1268504540 is 454058621.

It is a super-2 number, since 2×1268504540² = 3218207536001223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1268504540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588104 + ... + 590256.

It is an arithmetic number, because the mean of its divisors is an integer number (56316330).

Almost surely, 2^1268504540 is an apocalyptic number.

1268504540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268504540 is an abundant number, since it is smaller than the sum of its proper divisors (1434679300).

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

1268504540 is a wasteful number, since it uses less digits than its factorization.

1268504540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 1268504540 is about 35616.0713723454. The cubic root of 1268504540 is about 1082.5069050722.

The spelling of 1268504540 in words is "one billion, two hundred sixty-eight million, five hundred four thousand, five hundred forty".