1272263622 has 128 divisors (see below), whose sum is σ = 3105423360. Its totient is φ = 339880320.

The previous prime is 1272263609. The next prime is 1272263639. The reversal of 1272263622 is 2263622721.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (24192) is a multiple of the sum of its prime divisors (378).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7107529 + ... + 7107707.

It is an arithmetic number, because the mean of its divisors is an integer number (24261120).

Almost surely, 2^1272263622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272263622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552711680).

1272263622 is an abundant number, since it is smaller than the sum of its proper divisors (1833159738).

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

1272263622 is a wasteful number, since it uses less digits than its factorization.

1272263622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its digits is 24192, while the sum is 33.

The square root of 1272263622 is about 35668.8046057055. The cubic root of 1272263622 is about 1083.5751496376.

The spelling of 1272263622 in words is "one billion, two hundred seventy-two million, two hundred sixty-three thousand, six hundred twenty-two".