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156860 = 225112331
BaseRepresentation
bin100110010010111100
321222011122
4212102330
520004420
63210112
71222214
oct462274
9258148
10156860
11a7940
1276938
1356522
1441244
1531725
hex264bc

156860 has 48 divisors (see below), whose sum is σ = 387072. Its totient is φ = 52800.

The previous prime is 156841. The next prime is 156887. The reversal of 156860 is 68651.

156860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

156860 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 15 ways as a sum of consecutive naturals, for example, 5045 + ... + 5075.

It is an arithmetic number, because the mean of its divisors is an integer number (8064).

2156860 is an apocalyptic number.

156860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193536).

156860 is an abundant number, since it is smaller than the sum of its proper divisors (230212).

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

156860 is a wasteful number, since it uses less digits than its factorization.

156860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 156860 is about 396.0555516591. The cubic root of 156860 is about 53.9308671783.

Subtracting from 156860 its reverse (68651), we obtain a square (88209 = 2972).

The spelling of 156860 in words is "one hundred fifty-six thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 23 31 44 46 55 62 92 110 115 124 155 220 230 253 310 341 460 506 620 682 713 1012 1265 1364 1426 1705 2530 2852 3410 3565 5060 6820 7130 7843 14260 15686 31372 39215 78430 156860