1268272457 has 8 divisors (see below), whose sum is σ = 1336762440. Its totient is φ = 1201432960.

The previous prime is 1268272451. The next prime is 1268272469. The reversal of 1268272457 is 7542728621.

It can be written as a sum of positive squares in 4 ways, for example, as 452370361 + 815902096 = 21269^2 + 28564^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1268272457 - 2¹² = 1268268361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268272451) 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, 411044 + ... + 414117.

It is an arithmetic number, because the mean of its divisors is an integer number (167095305).

Almost surely, 2^1268272457 is an apocalyptic number.

It is an amenable number.

1268272457 is a deficient number, since it is larger than the sum of its proper divisors (68489983).

1268272457 is an equidigital number, since it uses as much as digits as its factorization.

1268272457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825243.

The product of its digits is 376320, while the sum is 44.

The square root of 1268272457 is about 35612.8131014667. The cubic root of 1268272457 is about 1082.4408832947.

The spelling of 1268272457 in words is "one billion, two hundred sixty-eight million, two hundred seventy-two thousand, four hundred fifty-seven".