1262880857 has 8 divisors (see below), whose sum is σ = 1446724032. Its totient is φ = 1079895600.

The previous prime is 1262880841. The next prime is 1262880863. The reversal of 1262880857 is 7580882621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1262880857 - 2⁴ = 1262880841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1262880257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211319 + ... + 217212.

It is an arithmetic number, because the mean of its divisors is an integer number (180840504).

Almost surely, 2^1262880857 is an apocalyptic number.

It is an amenable number.

1262880857 is a deficient number, since it is larger than the sum of its proper divisors (183843175).

1262880857 is an equidigital number, since it uses as much as digits as its factorization.

1262880857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428959.

The product of its (nonzero) digits is 430080, while the sum is 47.

The square root of 1262880857 is about 35537.0350057514. The cubic root of 1262880857 is about 1080.9048364133.

The spelling of 1262880857 in words is "one billion, two hundred sixty-two million, eight hundred eighty thousand, eight hundred fifty-seven".