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64227470 = 2530720921
BaseRepresentation
bin1111010100000…
…0100010001110
311110212002112012
43311000202032
5112420234340
610212341222
71406632046
oct365004216
9143762465
1064227470
113328905a
1219614812
13103ca228
14875c726
15598a565
hex3d4088e

64227470 has 16 divisors (see below), whose sum is σ = 115991568. Its totient is φ = 25606080.

The previous prime is 64227419. The next prime is 64227481. The reversal of 64227470 is 7472246.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7391 + ... + 13530.

It is an arithmetic number, because the mean of its divisors is an integer number (7249473).

Almost surely, 264227470 is an apocalyptic number.

64227470 is a deficient number, since it is larger than the sum of its proper divisors (51764098).

64227470 is a wasteful number, since it uses less digits than its factorization.

64227470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21235.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64227470 is about 8014.2042649286. The cubic root of 64227470 is about 400.4733354962.

The spelling of 64227470 in words is "sixty-four million, two hundred twenty-seven thousand, four hundred seventy".

Divisors: 1 2 5 10 307 614 1535 3070 20921 41842 104605 209210 6422747 12845494 32113735 64227470