Search a number
-
+
82000030 = 2572712357
BaseRepresentation
bin1001110001100…
…11100010011110
312201022000220011
410320303202132
5131443000110
612045313434
72013663100
oct470634236
9181260804
1082000030
1142317922
122356587a
1313cb0838
14ac67570
1572eb48a
hex4e3389e

82000030 has 48 divisors (see below), whose sum is σ = 174190176. Its totient is φ = 27706560.

The previous prime is 81999997. The next prime is 82000031. The reversal of 82000030 is 3000028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82000031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33612 + ... + 35968.

It is an arithmetic number, because the mean of its divisors is an integer number (3628962).

Almost surely, 282000030 is an apocalyptic number.

82000030 is an abundant number, since it is smaller than the sum of its proper divisors (92190146).

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

82000030 is a wasteful number, since it uses less digits than its factorization.

82000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449 (or 2442 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 82000030 is about 9055.3867946102. The cubic root of 82000030 is about 434.4482015583.

Adding to 82000030 its reverse (3000028), we get a palindrome (85000058).

The spelling of 82000030 in words is "eighty-two million, thirty", and thus it is an aban number and an uban number.

Divisors: 1 2 5 7 10 14 35 49 70 71 98 142 245 355 490 497 710 994 2357 2485 3479 4714 4970 6958 11785 16499 17395 23570 32998 34790 82495 115493 164990 167347 230986 334694 577465 836735 1154930 1171429 1673470 2342858 5857145 8200003 11714290 16400006 41000015 82000030