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20030052 = 2237673559
BaseRepresentation
bin100110001101…
…0001001100100
31101200122001210
41030122021210
520111430202
61553151420
7332152440
oct114321144
941618053
1020030052
1110340969
12685b570
1341c4003
142935820
151b59c6c
hex131a264

20030052 has 48 divisors (see below), whose sum is σ = 54225920. Its totient is φ = 5635872.

The previous prime is 20030027. The next prime is 20030053. The reversal of 20030052 is 25003002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20030053) 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, 3849 + ... + 7407.

Almost surely, 220030052 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 20030052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27112960).

20030052 is an abundant number, since it is smaller than the sum of its proper divisors (34195868).

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

20030052 is a wasteful number, since it uses less digits than its factorization.

20030052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 20030052 is about 4475.4946095376. The cubic root of 20030052 is about 271.5776497507.

Adding to 20030052 its reverse (25003002), we get a palindrome (45033054).

The spelling of 20030052 in words is "twenty million, thirty thousand, fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 67 84 134 201 268 402 469 804 938 1407 1876 2814 3559 5628 7118 10677 14236 21354 24913 42708 49826 74739 99652 149478 238453 298956 476906 715359 953812 1430718 1669171 2861436 3338342 5007513 6676684 10015026 20030052