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213404325 = 3522845391
BaseRepresentation
bin11001011100001…
…00101010100101
3112212120001200220
430232010222211
5414112414300
633101554553
75200623021
oct1456045245
9485501626
10213404325
11aa508912
125b575a59
133529b564
14204b1381
1513b05da0
hexcb84aa5

213404325 has 12 divisors (see below), whose sum is σ = 352828608. Its totient is φ = 113815600.

The previous prime is 213404311. The next prime is 213404353. The reversal of 213404325 is 523404312.

It is not a de Polignac number, because 213404325 - 24 = 213404309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213404295 and 213404304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1422621 + ... + 1422770.

It is an arithmetic number, because the mean of its divisors is an integer number (29402384).

Almost surely, 2213404325 is an apocalyptic number.

213404325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213404325 is a deficient number, since it is larger than the sum of its proper divisors (139424283).

213404325 is a wasteful number, since it uses less digits than its factorization.

213404325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845404 (or 2845399 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 213404325 is about 14608.3648982355. The cubic root of 213404325 is about 597.5869051886.

Adding to 213404325 its reverse (523404312), we get a palindrome (736808637).

The spelling of 213404325 in words is "two hundred thirteen million, four hundred four thousand, three hundred twenty-five".

Divisors: 1 3 5 15 25 75 2845391 8536173 14226955 42680865 71134775 213404325