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164443460 = 22567122719
BaseRepresentation
bin10011100110100…
…11010101000100
3102110102121000112
421303103111010
5314044142320
624152332152
74034513666
oct1163232504
9373377015
10164443460
1184907895
12470a4058
13280b812c
1417ba8536
15e683ec5
hex9cd3544

164443460 has 24 divisors (see below), whose sum is σ = 350488320. Its totient is φ = 64795104.

The previous prime is 164443417. The next prime is 164443463. The reversal of 164443460 is 64344461.

It is not an unprimeable number, because it can be changed into a prime (164443463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60020 + ... + 62699.

It is an arithmetic number, because the mean of its divisors is an integer number (14603680).

Almost surely, 2164443460 is an apocalyptic number.

164443460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164443460 is an abundant number, since it is smaller than the sum of its proper divisors (186044860).

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

164443460 is a wasteful number, since it uses less digits than its factorization.

164443460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122795 (or 122793 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 164443460 is about 12823.5509902679. The cubic root of 164443460 is about 547.8632910620.

The spelling of 164443460 in words is "one hundred sixty-four million, four hundred forty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 67 134 268 335 670 1340 122719 245438 490876 613595 1227190 2454380 8222173 16444346 32888692 41110865 82221730 164443460