1272467180 has 72 divisors (see below), whose sum is σ = 2859399312. Its totient is φ = 475364736.

The previous prime is 1272467177. The next prime is 1272467233. The reversal of 1272467180 is 817642721.

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 23 ways as a sum of consecutive naturals, for example, 453542 + ... + 456338.

Almost surely, 2^1272467180 is an apocalyptic number.

1272467180 is a gapful number since it is divisible by the number (10) 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 1272467180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429699656).

1272467180 is an abundant number, since it is smaller than the sum of its proper divisors (1586932132).

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

1272467180 is a wasteful number, since it uses less digits than its factorization.

1272467180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 1272467180 is about 35671.6579373597. The cubic root of 1272467180 is about 1083.6329360439.

The spelling of 1272467180 in words is "one billion, two hundred seventy-two million, four hundred sixty-seven thousand, one hundred eighty".