672001930 has 16 divisors (see below), whose sum is σ = 1211036904. Its totient is φ = 268482240.

The previous prime is 672001907. The next prime is 672001933. The reversal of 672001930 is 39100276.

672001930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 25923²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 241895809 + 430106121 = 15553^2 + 20739^2 .

It is not an unprimeable number, because it can be changed into a prime (672001933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30861 + ... + 47920.

Almost surely, 2^672001930 is an apocalyptic number.

672001930 is a deficient number, since it is larger than the sum of its proper divisors (539034974).

672001930 is a wasteful number, since it uses less digits than its factorization.

672001930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79641.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 672001930 is about 25923.0000192879. Note that the first 4 decimals coincide. The cubic root of 672001930 is about 875.9046665157.

The spelling of 672001930 in words is "six hundred seventy-two million, one thousand, nine hundred thirty".