672390 has 48 divisors (see below), whose sum is σ = 1812096. Its totient is φ = 172800.

The previous prime is 672379. The next prime is 672439. The reversal of 672390 is 93276.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

672390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2670 + ... + 2910.

It is an arithmetic number, because the mean of its divisors is an integer number (37752).

2⁶⁷²³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906048).

672390 is an abundant number, since it is smaller than the sum of its proper divisors (1139706).

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

672390 is a wasteful number, since it uses less digits than its factorization.

672390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 672390 is about 819.9939024164. The cubic root of 672390 is about 87.6073240889.

The spelling of 672390 in words is "six hundred seventy-two thousand, three hundred ninety".