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70830252 = 223219103553
BaseRepresentation
bin1000011100011…
…00100010101100
311221021112211200
410032030202230
5121113032002
611010045500
71520022123
oct416144254
9157245750
1070830252
1136a888a9
121b879890
131189c6bc
14959aaba
156341b1c
hex438c8ac

70830252 has 36 divisors (see below), whose sum is σ = 188468280. Its totient is φ = 22367232.

The previous prime is 70830229. The next prime is 70830289. The reversal of 70830252 is 25203807.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 51093 + ... + 52460.

It is an arithmetic number, because the mean of its divisors is an integer number (5235230).

Almost surely, 270830252 is an apocalyptic number.

It is an amenable number.

70830252 is an abundant number, since it is smaller than the sum of its proper divisors (117638028).

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

70830252 is a wasteful number, since it uses less digits than its factorization.

70830252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103582 (or 103577 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 70830252 is about 8416.0710548331. The cubic root of 70830252 is about 413.7515137022.

The spelling of 70830252 in words is "seventy million, eight hundred thirty thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 19 36 38 57 76 114 171 228 342 684 103553 207106 310659 414212 621318 931977 1242636 1863954 1967507 3727908 3935014 5902521 7870028 11805042 17707563 23610084 35415126 70830252