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30044289 = 3117112823
BaseRepresentation
bin111001010011…
…1000010000001
32002112102000110
41302213002001
530142404124
62551541533
7513241452
oct162470201
962472013
1030044289
1115a607a0
12a08a8a9
1362bc1b2
143dc1129
152987029
hex1ca7081

30044289 has 16 divisors (see below), whose sum is σ = 44319744. Its totient is φ = 17950800.

The previous prime is 30044281. The next prime is 30044293. The reversal of 30044289 is 98244003.

It is a happy number.

It is not a de Polignac number, because 30044289 - 23 = 30044281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30044281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4069 + ... + 8754.

It is an arithmetic number, because the mean of its divisors is an integer number (2769984).

Almost surely, 230044289 is an apocalyptic number.

It is an amenable number.

30044289 is a deficient number, since it is larger than the sum of its proper divisors (14275455).

30044289 is a wasteful number, since it uses less digits than its factorization.

30044289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12908.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30044289 is about 5481.2670980349. The cubic root of 30044289 is about 310.8760823232.

The spelling of 30044289 in words is "thirty million, forty-four thousand, two hundred eighty-nine".

Divisors: 1 3 11 33 71 213 781 2343 12823 38469 141053 423159 910433 2731299 10014763 30044289