Search a number
-
+
7985236 = 2272131311
BaseRepresentation
bin11110011101100001010100
3120000200200111
4132131201110
54021011421
6443052404
7124605400
oct36354124
916020614
107985236
114564476
122811104
1318677bc
1410bc100
15a7aee1
hex79d854

7985236 has 36 divisors (see below), whose sum is σ = 16432416. Its totient is φ = 3385200.

The previous prime is 7985227. The next prime is 7985239. The reversal of 7985236 is 6325897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25521 + ... + 25831.

It is an arithmetic number, because the mean of its divisors is an integer number (456456).

Almost surely, 27985236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7985236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8216208).

7985236 is an abundant number, since it is smaller than the sum of its proper divisors (8447180).

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

7985236 is a wasteful number, since it uses less digits than its factorization.

With its successor (7985237) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (460).

7985236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 451 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 7985236 is about 2825.8159883474. The cubic root of 7985236 is about 199.8768909030.

The spelling of 7985236 in words is "seven million, nine hundred eighty-five thousand, two hundred thirty-six".

Divisors: 1 2 4 7 14 28 49 98 131 196 262 311 524 622 917 1244 1834 2177 3668 4354 6419 8708 12838 15239 25676 30478 40741 60956 81482 162964 285187 570374 1140748 1996309 3992618 7985236