672256 has 40 divisors (see below), whose sum is σ = 1460844. Its totient is φ = 307200.

The previous prime is 672251. The next prime is 672271. The reversal of 672256 is 652276.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 6400 = 816^2 + 80^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (672251) by changing a digit.

672256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6606 + ... + 6706.

2⁶⁷²²⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730422).

672256 is an abundant number, since it is smaller than the sum of its proper divisors (788588).

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

672256 is a wasteful number, since it uses less digits than its factorization.

672256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 116 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 672256 is about 819.9121904204. The cubic root of 672256 is about 87.6015039740.

The spelling of 672256 in words is "six hundred seventy-two thousand, two hundred fifty-six".