672444838 has 8 divisors (see below), whose sum is σ = 1086257088. Its totient is φ = 310359144.

The previous prime is 672444833. The next prime is 672444841. The reversal of 672444838 is 838444276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672444833) 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, 12931606 + ... + 12931657.

It is an arithmetic number, because the mean of its divisors is an integer number (135782136).

Almost surely, 2^672444838 is an apocalyptic number.

672444838 is a deficient number, since it is larger than the sum of its proper divisors (413812250).

672444838 is a wasteful number, since it uses less digits than its factorization.

672444838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25863278.

The product of its digits is 1032192, while the sum is 46.

The square root of 672444838 is about 25931.5413733931. The cubic root of 672444838 is about 876.0970568288.

The spelling of 672444838 in words is "six hundred seventy-two million, four hundred forty-four thousand, eight hundred thirty-eight".