Search a number
-
+
213025512 = 23372714679
BaseRepresentation
bin11001011001010…
…00001011101000
3112211211211001210
430230220023220
5414013304022
633045513120
75164454430
oct1454501350
9484754053
10213025512
11aa27a247
125b4127a0
1335197ccb
14204132c0
1513a7da0c
hexcb282e8

213025512 has 64 divisors (see below), whose sum is σ = 611020800. Its totient is φ = 60626880.

The previous prime is 213025447. The next prime is 213025513. The reversal of 213025512 is 215520312.

It is a super-3 number, since 3×2130255123 (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (213025513) 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, 43189 + ... + 47867.

It is an arithmetic number, because the mean of its divisors is an integer number (9547200).

Almost surely, 2213025512 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 213025512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305510400).

213025512 is an abundant number, since it is smaller than the sum of its proper divisors (397995288).

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

213025512 is a wasteful number, since it uses less digits than its factorization.

213025512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966 (or 4962 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 213025512 is about 14595.3935198747. The cubic root of 213025512 is about 597.2331045404.

Adding to 213025512 its reverse (215520312), we get a palindrome (428545824).

The spelling of 213025512 in words is "two hundred thirteen million, twenty-five thousand, five hundred twelve".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 271 542 813 1084 1626 1897 2168 3252 3794 4679 5691 6504 7588 9358 11382 14037 15176 18716 22764 28074 32753 37432 45528 56148 65506 98259 112296 131012 196518 262024 393036 786072 1268009 2536018 3804027 5072036 7608054 8876063 10144072 15216108 17752126 26628189 30432216 35504252 53256378 71008504 106512756 213025512