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289622738 = 21912760013
BaseRepresentation
bin10001010000110…
…100101011010010
3202011222100201002
4101100310223102
51043120411423
644423342002
710114516106
oct2120645322
9664870632
10289622738
11139536939
1280bb1902
1348006602
142a671906
151a65e228
hex11434ad2

289622738 has 16 divisors (see below), whose sum is σ = 460907520. Its totient is φ = 136107216.

The previous prime is 289622737. The next prime is 289622741. The reversal of 289622738 is 837226982.

It is a junction number, because it is equal to n+sod(n) for n = 289622692 and 289622701.

It is not an unprimeable number, because it can be changed into a prime (289622737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25181 + ... + 34832.

It is an arithmetic number, because the mean of its divisors is an integer number (28806720).

Almost surely, 2289622738 is an apocalyptic number.

289622738 is a deficient number, since it is larger than the sum of its proper divisors (171284782).

289622738 is a wasteful number, since it uses less digits than its factorization.

289622738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60161.

The product of its digits is 580608, while the sum is 47.

The square root of 289622738 is about 17018.3059673988. The cubic root of 289622738 is about 661.6234429893.

The spelling of 289622738 in words is "two hundred eighty-nine million, six hundred twenty-two thousand, seven hundred thirty-eight".

Divisors: 1 2 19 38 127 254 2413 4826 60013 120026 1140247 2280494 7621651 15243302 144811369 289622738