1270280881 has 9 divisors (see below), whose sum is σ = 1316665441. Its totient is φ = 1225480144.

The previous prime is 1270280867. The next prime is 1270280909. The reversal of 1270280881 is 1880820721.

The square root of 1270280881 is 35641.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 521711281 + 748569600 = 22841^2 + 27360^2 .

It is not a de Polignac number, because 1270280881 - 2⁹ = 1270280369 is a prime.

It is a super-2 number, since 2×1270280881² = 3227227033268272322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1270280881.

It is not an unprimeable number, because it can be changed into a prime (1270280801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1032975 + ... + 1034203.

Almost surely, 2^1270280881 is an apocalyptic number.

1270280881 is the 35641-st square number.

1270280881 is the 17821-st centered octagonal number.

It is an amenable number.

1270280881 is a deficient number, since it is larger than the sum of its proper divisors (46384560).

1270280881 is an frugal number, since it uses more digits than its factorization.

1270280881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The cubic root of 1270280881 is about 1083.0119629209.

The spelling of 1270280881 in words is "one billion, two hundred seventy million, two hundred eighty thousand, eight hundred eighty-one".