1273285632 has 88 divisors (see below), whose sum is σ = 3429560176. Its totient is φ = 419954688.

The previous prime is 1273285613. The next prime is 1273285639. The reversal of 1273285632 is 2365823721.

It is not an unprimeable number, because it can be changed into a prime (1273285639) 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, 295848 + ... + 300120.

Almost surely, 2^1273285632 is an apocalyptic number.

1273285632 is a gapful number since it is divisible by the number (12) 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 1273285632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714780088).

1273285632 is an abundant number, since it is smaller than the sum of its proper divisors (2156274544).

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

1273285632 is an equidigital number, since it uses as much as digits as its factorization.

1273285632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393 (or 4375 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 1273285632 is about 35683.1281139981. The cubic root of 1273285632 is about 1083.8652174664.

The spelling of 1273285632 in words is "one billion, two hundred seventy-three million, two hundred eighty-five thousand, six hundred thirty-two".