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64044029 = 722356827
BaseRepresentation
bin1111010001001…
…1101111111101
311110111202220002
43310103233331
5112343402104
610204404045
71405236200
oct364235775
9143452802
1064044029
1133173255
1219546625
131036489a
148711937
15595101e
hex3d13bfd

64044029 has 12 divisors (see below), whose sum is σ = 77740704. Its totient is φ = 52507224.

The previous prime is 64044017. The next prime is 64044037. The reversal of 64044029 is 92044046.

It is a de Polignac number, because none of the positive numbers 2k-64044029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64043992 and 64044010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64044229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27287 + ... + 29540.

It is an arithmetic number, because the mean of its divisors is an integer number (6478392).

Almost surely, 264044029 is an apocalyptic number.

It is an amenable number.

64044029 is a deficient number, since it is larger than the sum of its proper divisors (13696675).

64044029 is a wasteful number, since it uses less digits than its factorization.

64044029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56864 (or 56857 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64044029 is about 8002.7513393832. The cubic root of 64044029 is about 400.0917060567.

The spelling of 64044029 in words is "sixty-four million, forty-four thousand, twenty-nine".

Divisors: 1 7 23 49 161 1127 56827 397789 1307021 2784523 9149147 64044029