1272752180 has 48 divisors (see below), whose sum is σ = 3071542656. Its totient is φ = 433952640.

The previous prime is 1272752179. The next prime is 1272752231. The reversal of 1272752180 is 812572721.

It is a super-2 number, since 2×1272752180² = 3239796223389504800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1272752180.

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, 227 + ... + 50453.

It is an arithmetic number, because the mean of its divisors is an integer number (63990472).

Almost surely, 2^1272752180 is an apocalyptic number.

1272752180 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 1272752180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535771328).

1272752180 is an abundant number, since it is smaller than the sum of its proper divisors (1798790476).

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

1272752180 is a wasteful number, since it uses less digits than its factorization.

1272752180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50424 (or 50422 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 1272752180 is about 35675.6524817697. The cubic root of 1272752180 is about 1083.7138319962.

The spelling of 1272752180 in words is "one billion, two hundred seventy-two million, seven hundred fifty-two thousand, one hundred eighty".