672552040 has 16 divisors (see below), whose sum is σ = 1513242180. Its totient is φ = 269020800.

The previous prime is 672552029. The next prime is 672552059. The reversal of 672552040 is 40255276.

It can be written as a sum of positive squares in 2 ways, for example, as 666569124 + 5982916 = 25818^2 + 2446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 672551993 and 672552011.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8406861 + ... + 8406940.

Almost surely, 2^672552040 is an apocalyptic number.

It is an amenable number.

672552040 is an abundant number, since it is smaller than the sum of its proper divisors (840690140).

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

672552040 is a wasteful number, since it uses less digits than its factorization.

672552040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813812 (or 16813808 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 672552040 is about 25933.6083104531. The cubic root of 672552040 is about 876.1436105191.

The spelling of 672552040 in words is "six hundred seventy-two million, five hundred fifty-two thousand, forty".