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164430456 = 23373127739
BaseRepresentation
bin10011100110100…
…00001001111000
3102110101221011220
421303100021320
5314043233311
624152152040
74034431041
oct1163201170
9373357156
10164430456
11848a9043
1247098620
13280b2238
1417ba38c8
15e680206
hex9cd0278

164430456 has 64 divisors (see below), whose sum is σ = 420556800. Its totient is φ = 53561088.

The previous prime is 164430439. The next prime is 164430457. The reversal of 164430456 is 654034461.

It is a super-3 number, since 3×1644304563 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164430457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222135 + ... + 222873.

It is an arithmetic number, because the mean of its divisors is an integer number (6571200).

Almost surely, 2164430456 is an apocalyptic number.

It is an amenable number.

164430456 is an abundant number, since it is smaller than the sum of its proper divisors (256126344).

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

164430456 is a wasteful number, since it uses less digits than its factorization.

164430456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 164430456 is about 12823.0439443995. The cubic root of 164430456 is about 547.8488492147.

The spelling of 164430456 in words is "one hundred sixty-four million, four hundred thirty thousand, four hundred fifty-six".

Divisors: 1 2 3 4 6 8 12 24 73 127 146 219 254 292 381 438 508 584 739 762 876 1016 1478 1524 1752 2217 2956 3048 4434 5912 8868 9271 17736 18542 27813 37084 53947 55626 74168 93853 107894 111252 161841 187706 215788 222504 281559 323682 375412 431576 563118 647364 750824 1126236 1294728 2252472 6851269 13702538 20553807 27405076 41107614 54810152 82215228 164430456