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672231 = 37217269
BaseRepresentation
bin10100100000111100111
31021011010110
42210013213
5133002411
622224103
75466600
oct2440747
91234113
10672231
1141a06a
12285033
131a6c91
14136da7
15d42a6
hexa41e7

672231 has 24 divisors (see below), whose sum is σ = 1108080. Its totient is φ = 360192.

The previous prime is 672229. The next prime is 672251. The reversal of 672231 is 132276.

It is a happy number.

672231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 672231 - 21 = 672229 is a prime.

It is a super-2 number, since 2×6722312 = 903789034722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 62 + 75 + 217 + 219 + 33 + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 672198 and 672207.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2365 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (46170).

2672231 is an apocalyptic number.

672231 is a deficient number, since it is larger than the sum of its proper divisors (435849).

672231 is a wasteful number, since it uses less digits than its factorization.

672231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 296 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 672231 is about 819.8969447437. The cubic root of 672231 is about 87.6004180460.

It can be divided in two parts, 672 and 231, that added together give a triangular number (903 = T42).

The spelling of 672231 in words is "six hundred seventy-two thousand, two hundred thirty-one".

Divisors: 1 3 7 17 21 49 51 119 147 269 357 807 833 1883 2499 4573 5649 13181 13719 32011 39543 96033 224077 672231