672331842 has 144 divisors (see below), whose sum is σ = 1840430592. Its totient is φ = 175815360.

The previous prime is 672331841. The next prime is 672331859. The reversal of 672331842 is 248133276.

It is a happy number.

It is a super-2 number, since 2×672331842² = 904060211534225928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 672331797 and 672331806.

It is not an unprimeable number, because it can be changed into a prime (672331841) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 2189853 + ... + 2190159.

It is an arithmetic number, because the mean of its divisors is an integer number (12780768).

Almost surely, 2^672331842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672331842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (920215296).

672331842 is an abundant number, since it is smaller than the sum of its proper divisors (1168098750).

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

672331842 is a wasteful number, since it uses less digits than its factorization.

672331842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 523 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 672331842 is about 25929.3625451919. The cubic root of 672331842 is about 876.0479816716.

The spelling of 672331842 in words is "six hundred seventy-two million, three hundred thirty-one thousand, eight hundred forty-two".