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44470987 = 1143149631
BaseRepresentation
bin1010100110100…
…1001011001011
310002200100201121
42221221023023
542341032422
64225100111
71046666011
oct251511313
9102610647
1044470987
1123114790
1212a87637
1392a08c2
145c988b1
153d868c7
hex2a692cb

44470987 has 16 divisors (see below), whose sum is σ = 50054400. Its totient is φ = 39160800.

The previous prime is 44470981. The next prime is 44470991. The reversal of 44470987 is 78907444.

It is a happy number.

44470987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-44470987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (44470981) 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 15 ways as a sum of consecutive naturals, for example, 70162 + ... + 70792.

It is an arithmetic number, because the mean of its divisors is an integer number (3128400).

Almost surely, 244470987 is an apocalyptic number.

44470987 is a deficient number, since it is larger than the sum of its proper divisors (5583413).

44470987 is a wasteful number, since it uses less digits than its factorization.

44470987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 44470987 is about 6668.6570612081. The cubic root of 44470987 is about 354.2900232136.

The spelling of 44470987 in words is "forty-four million, four hundred seventy thousand, nine hundred eighty-seven".

Divisors: 1 11 43 149 473 631 1639 6407 6941 27133 70477 94019 298463 1034209 4042817 44470987