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252130970 = 25721339581
BaseRepresentation
bin11110000011100…
…11011010011010
3122120102120200002
433001303122122
51004021142340
641004013002
76151035500
oct1701633232
9576376602
10252130970
1111a359803
1270531162
134030a630
14256b2670
1517205715
hexf07369a

252130970 has 48 divisors (see below), whose sum is σ = 568555848. Its totient is φ = 79793280.

The previous prime is 252130939. The next prime is 252130981. The reversal of 252130970 is 79031252.

It can be written as a sum of positive squares in 4 ways, for example, as 179318881 + 72812089 = 13391^2 + 8533^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13421 + ... + 26160.

Almost surely, 2252130970 is an apocalyptic number.

252130970 is an abundant number, since it is smaller than the sum of its proper divisors (316424878).

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

252130970 is a wasteful number, since it uses less digits than its factorization.

252130970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39615 (or 39608 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 252130970 is about 15878.6324977940. The cubic root of 252130970 is about 631.7453658958.

The spelling of 252130970 in words is "two hundred fifty-two million, one hundred thirty thousand, nine hundred seventy".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 130 182 245 455 490 637 910 1274 3185 6370 39581 79162 197905 277067 395810 514553 554134 1029106 1385335 1939469 2572765 2770670 3601871 3878938 5145530 7203742 9697345 18009355 19394690 25213097 36018710 50426194 126065485 252130970