672127272 has 96 divisors (see below), whose sum is σ = 1847664000. Its totient is φ = 220711680.

The previous prime is 672127243. The next prime is 672127273. The reversal of 672127272 is 272721276.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (672127273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2391772 + ... + 2392052.

It is an arithmetic number, because the mean of its divisors is an integer number (19246500).

Almost surely, 2^672127272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672127272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923832000).

672127272 is an abundant number, since it is smaller than the sum of its proper divisors (1175536728).

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

672127272 is a wasteful number, since it uses less digits than its factorization.

672127272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 664 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 672127272 is about 25925.4174894060. The cubic root of 672127272 is about 875.9591211299.

The spelling of 672127272 in words is "six hundred seventy-two million, one hundred twenty-seven thousand, two hundred seventy-two".