1270753640 has 32 divisors (see below), whose sum is σ = 3079135080. Its totient is φ = 469201152.

The previous prime is 1270753607. The next prime is 1270753651. The reversal of 1270753640 is 463570721.

It can be written as a sum of positive squares in 4 ways, for example, as 1020291364 + 250462276 = 31942^2 + 15826^2 .

It is a super-2 number, since 2×1270753640² = 3229629627146499200, 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 1270753640.

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, 1221359 + ... + 1222398.

Almost surely, 2^1270753640 is an apocalyptic number.

1270753640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270753640 is an abundant number, since it is smaller than the sum of its proper divisors (1808381440).

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

1270753640 is a wasteful number, since it uses less digits than its factorization.

1270753640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443781 (or 2443777 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1270753640 is about 35647.6316183839. The cubic root of 1270753640 is about 1083.1463007030.

The spelling of 1270753640 in words is "one billion, two hundred seventy million, seven hundred fifty-three thousand, six hundred forty".