Search a number
-
+
30850580 = 22517312927
BaseRepresentation
bin111010110101…
…1111000010100
32011001101001002
41311223320110
530344204310
63021122432
7523140245
oct165537024
964041032
1030850580
1116461552
12a3b9418
1365121a7
144150ccc
152a95da5
hex1d6be14

30850580 has 48 divisors (see below), whose sum is σ = 70834176. Its totient is φ = 11235840.

The previous prime is 30850579. The next prime is 30850583. The reversal of 30850580 is 8505803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30850583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9077 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (1475712).

Almost surely, 230850580 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 30850580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35417088).

30850580 is an abundant number, since it is smaller than the sum of its proper divisors (39983596).

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

30850580 is a wasteful number, since it uses less digits than its factorization.

30850580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 30850580 is about 5554.3298425643. The cubic root of 30850580 is about 313.6325369935.

The spelling of 30850580 in words is "thirty million, eight hundred fifty thousand, five hundred eighty".

Divisors: 1 2 4 5 10 17 20 31 34 62 68 85 124 155 170 310 340 527 620 1054 2108 2635 2927 5270 5854 10540 11708 14635 29270 49759 58540 90737 99518 181474 199036 248795 362948 453685 497590 907370 995180 1542529 1814740 3085058 6170116 7712645 15425290 30850580