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232720 = 2452909
BaseRepresentation
bin111000110100010000
3102211020021
4320310100
524421340
64553224
71656325
oct706420
9384207
10232720
11149934
12b2814
1381c07
1460b4c
1548e4a
hex38d10

232720 has 20 divisors (see below), whose sum is σ = 541260. Its totient is φ = 93056.

The previous prime is 232711. The next prime is 232741. The reversal of 232720 is 27232.

It is a happy number.

232720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 147456 + 85264 = 384^2 + 292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 232694 and 232703.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 1375 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (27063).

2232720 is an apocalyptic number.

232720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232720 is an abundant number, since it is smaller than the sum of its proper divisors (308540).

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

232720 is a wasteful number, since it uses less digits than its factorization.

232720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2916 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 232720 is about 482.4106134819. The cubic root of 232720 is about 61.5098360455.

Adding to 232720 its reverse (27232), we get a palindrome (259952).

The spelling of 232720 in words is "two hundred thirty-two thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2909 5818 11636 14545 23272 29090 46544 58180 116360 232720