Search a number
-
+
156940 = 22571959
BaseRepresentation
bin100110010100001100
321222021121
4212110030
520010230
63210324
71222360
oct462414
9258247
10156940
11a7a03
12769a4
1356584
14412a0
153177a
hex2650c

156940 has 48 divisors (see below), whose sum is σ = 403200. Its totient is φ = 50112.

The previous prime is 156913. The next prime is 156941. The reversal of 156940 is 49651.

It is not an unprimeable number, because it can be changed into a prime (156941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2631 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (8400).

2156940 is an apocalyptic number.

156940 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 156940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201600).

156940 is an abundant number, since it is smaller than the sum of its proper divisors (246260).

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

156940 is a wasteful number, since it uses less digits than its factorization.

156940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 156940 is about 396.1565347183. The cubic root of 156940 is about 53.9400340280.

The spelling of 156940 in words is "one hundred fifty-six thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 59 70 76 95 118 133 140 190 236 266 295 380 413 532 590 665 826 1121 1180 1330 1652 2065 2242 2660 4130 4484 5605 7847 8260 11210 15694 22420 31388 39235 78470 156940