1273231456 has 96 divisors (see below), whose sum is σ = 3047429952. Its totient is φ = 511180800.

The previous prime is 1273231429. The next prime is 1273231489. The reversal of 1273231456 is 6541323721.

It is a super-2 number, since 2×1273231456² = 3242236681095759872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 978006 + ... + 979306.

It is an arithmetic number, because the mean of its divisors is an integer number (31744062).

Almost surely, 2^1273231456 is an apocalyptic number.

1273231456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273231456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523714976).

1273231456 is an abundant number, since it is smaller than the sum of its proper divisors (1774198496).

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

1273231456 is a wasteful number, since it uses less digits than its factorization.

1273231456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1584 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 1273231456 is about 35682.3689796516. The cubic root of 1273231456 is about 1083.8498450803.

The spelling of 1273231456 in words is "one billion, two hundred seventy-three million, two hundred thirty-one thousand, four hundred fifty-six".