672307732 has 12 divisors (see below), whose sum is σ = 1177454740. Its totient is φ = 335892096.

The previous prime is 672307673. The next prime is 672307739. The reversal of 672307732 is 237703276.

It can be written as a sum of positive squares in 2 ways, for example, as 481978116 + 190329616 = 21954^2 + 13796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 672307691 and 672307700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672307739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59607 + ... + 69982.

Almost surely, 2^672307732 is an apocalyptic number.

It is an amenable number.

672307732 is a deficient number, since it is larger than the sum of its proper divisors (505147008).

672307732 is a wasteful number, since it uses less digits than its factorization.

672307732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130890 (or 130888 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 37.

The square root of 672307732 is about 25928.8976240796. The cubic root of 672307732 is about 876.0375097746.

The spelling of 672307732 in words is "six hundred seventy-two million, three hundred seven thousand, seven hundred thirty-two".