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230210644 = 2257552661
BaseRepresentation
bin11011011100010…
…11110001010100
3121001011220122011
431232023301110
5432413220034
634502114004
75463521026
oct1556136124
9531156564
10230210644
11108a47734
126511b904
1338904121
1422808016
1515325864
hexdb8bc54

230210644 has 6 divisors (see below), whose sum is σ = 402868634. Its totient is φ = 115105320.

The previous prime is 230210639. The next prime is 230210677. The reversal of 230210644 is 446012032.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 142563600 + 87647044 = 11940^2 + 9362^2 .

It is a super-2 number, since 2×2302106442 = 105993881221789472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28776327 + ... + 28776334.

Almost surely, 2230210644 is an apocalyptic number.

It is an amenable number.

230210644 is a deficient number, since it is larger than the sum of its proper divisors (172657990).

230210644 is a wasteful number, since it uses less digits than its factorization.

230210644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57552665 (or 57552663 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 230210644 is about 15172.6940257820. The cubic root of 230210644 is about 612.8795539484.

Adding to 230210644 its reverse (446012032), we get a palindrome (676222676).

The spelling of 230210644 in words is "two hundred thirty million, two hundred ten thousand, six hundred forty-four".

Divisors: 1 2 4 57552661 115105322 230210644