Search a number
-
+
156220 = 22573107
BaseRepresentation
bin100110001000111100
321221021221
4212020330
514444340
63203124
71220311
oct461074
9257257
10156220
11a7409
12764a4
135614c
1440d08
153144a
hex2623c

156220 has 24 divisors (see below), whose sum is σ = 335664. Its totient is φ = 61056.

The previous prime is 156217. The next prime is 156227. The reversal of 156220 is 22651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 156194 and 156203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (13986).

2156220 is an apocalyptic number.

156220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156220 is an abundant number, since it is smaller than the sum of its proper divisors (179444).

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

156220 is a wasteful number, since it uses less digits than its factorization.

156220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 156220 is about 395.2467583675. The cubic root of 156220 is about 53.8574199347.

Adding to 156220 its reverse (22651), we get a palindrome (178871).

The spelling of 156220 in words is "one hundred fifty-six thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 73 107 146 214 292 365 428 535 730 1070 1460 2140 7811 15622 31244 39055 78110 156220