1272596886 has 64 divisors (see below), whose sum is σ = 3143370240. Its totient is φ = 378349920.

The previous prime is 1272596881. The next prime is 1272596887. The reversal of 1272596886 is 6886952721.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272596881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11271 + ... + 51693.

It is an arithmetic number, because the mean of its divisors is an integer number (49115160).

Almost surely, 2^1272596886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272596886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571685120).

1272596886 is an abundant number, since it is smaller than the sum of its proper divisors (1870773354).

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

1272596886 is a wasteful number, since it uses less digits than its factorization.

1272596886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40498 (or 40492 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 1272596886 is about 35673.4759450211. The cubic root of 1272596886 is about 1083.6697539990.

The spelling of 1272596886 in words is "one billion, two hundred seventy-two million, five hundred ninety-six thousand, eight hundred eighty-six".