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470145664 = 273673013
BaseRepresentation
bin11100000001011…
…101101010000000
31012202122212121101
4130001131222000
51430324130124
6114352504144
714436113032
oct3401355200
91182585541
10470145664
1122142643a
1211154b054
1376531501
1446623c52
152b41c644
hex1c05da80

470145664 has 16 divisors (see below), whose sum is σ = 936618570. Its totient is φ = 235072768.

The previous prime is 470145661. The next prime is 470145673. The reversal of 470145664 is 466541074.

It can be written as a sum of positive squares in only one way, i.e., 466905664 + 3240000 = 21608^2 + 1800^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (470145661) by changing a digit.

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 as a sum of consecutive naturals, namely, 1836379 + ... + 1836634.

Almost surely, 2470145664 is an apocalyptic number.

It is an amenable number.

470145664 is a deficient number, since it is larger than the sum of its proper divisors (466472906).

470145664 is an equidigital number, since it uses as much as digits as its factorization.

470145664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673027 (or 3673015 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 470145664 is about 21682.8426180702. The cubic root of 470145664 is about 777.5783230478.

The spelling of 470145664 in words is "four hundred seventy million, one hundred forty-five thousand, six hundred sixty-four".

Divisors: 1 2 4 8 16 32 64 128 3673013 7346026 14692052 29384104 58768208 117536416 235072832 470145664