672016140 has 144 divisors (see below), whose sum is σ = 2131024896. Its totient is φ = 171216000.

The previous prime is 672016133. The next prime is 672016141. The reversal of 672016140 is 41610276.

It is not an unprimeable number, because it can be changed into a prime (672016141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 462415 + ... + 463865.

It is an arithmetic number, because the mean of its divisors is an integer number (14798784).

Almost surely, 2^672016140 is an apocalyptic number.

672016140 is a gapful number since it is divisible by the number (60) 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 672016140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1065512448).

672016140 is an abundant number, since it is smaller than the sum of its proper divisors (1459008756).

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

672016140 is a wasteful number, since it uses less digits than its factorization.

672016140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 672016140 is about 25923.2740987708. The cubic root of 672016140 is about 875.9108403658.

The spelling of 672016140 in words is "six hundred seventy-two million, sixteen thousand, one hundred forty".