672140448 has 108 divisors (see below), whose sum is σ = 2223511290. Its totient is φ = 192036096.

The previous prime is 672140437. The next prime is 672140461. The reversal of 672140448 is 844041276.

672140448 is a `hidden beast` number, since 6 + 72 + 140 + 448 = 666.

It can be written as a sum of positive squares in only one way, i.e., 605750544 + 66389904 = 24612^2 + 8148^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9703 + ... + 37926.

Almost surely, 2^672140448 is an apocalyptic number.

It is an amenable number.

672140448 is an abundant number, since it is smaller than the sum of its proper divisors (1551370842).

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

672140448 is a wasteful number, since it uses less digits than its factorization.

672140448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47659 (or 47641 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 672140448 is about 25925.6716017155. The cubic root of 672140448 is about 875.9648450269.

The spelling of 672140448 in words is "six hundred seventy-two million, one hundred forty thousand, four hundred forty-eight".