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245508628 = 221771211241
BaseRepresentation
bin11101010001000…
…10101000010100
3122002222010112011
432220202220110
51000322234003
640210034004
76040534411
oct1650425024
9562863464
10245508628
111166462a2
126a278904
133bb2c2a1
142486b108
151684846d
hexea22a14

245508628 has 48 divisors (see below), whose sum is σ = 465429888. Its totient is φ = 112896000.

The previous prime is 245508607. The next prime is 245508631. The reversal of 245508628 is 826805542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018588 + ... + 1018828.

It is an arithmetic number, because the mean of its divisors is an integer number (9696456).

Almost surely, 2245508628 is an apocalyptic number.

It is an amenable number.

245508628 is a deficient number, since it is larger than the sum of its proper divisors (219921260).

245508628 is a wasteful number, since it uses less digits than its factorization.

245508628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 245508628 is about 15668.7149441171. The cubic root of 245508628 is about 626.1651889456.

The spelling of 245508628 in words is "two hundred forty-five million, five hundred eight thousand, six hundred twenty-eight".

Divisors: 1 2 4 17 34 68 71 142 211 241 284 422 482 844 964 1207 2414 3587 4097 4828 7174 8194 14348 14981 16388 17111 29962 34222 50851 59924 68444 101702 203404 254677 290887 509354 581774 864467 1018708 1163548 1728934 3457868 3610421 7220842 14441684 61377157 122754314 245508628