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989030237 = 131919320747
BaseRepresentation
bin111010111100110…
…110011101011101
32112221000221102112
4322330312131131
54011142431422
6242050203405
733336422036
oct7274663535
92487027375
10989030237
11468311068
12237283565
13129b990c0
14954d3a8d
155bc65ee2
hex3af3675d

989030237 has 16 divisors (see below), whose sum is σ = 1127031360. Its totient is φ = 860378112.

The previous prime is 989030227. The next prime is 989030243. The reversal of 989030237 is 732030989.

It is a cyclic number.

It is not a de Polignac number, because 989030237 - 28 = 989029981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989030194 and 989030203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989030227) 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, 37298 + ... + 58044.

It is an arithmetic number, because the mean of its divisors is an integer number (70439460).

Almost surely, 2989030237 is an apocalyptic number.

It is an amenable number.

989030237 is a deficient number, since it is larger than the sum of its proper divisors (138001123).

989030237 is a wasteful number, since it uses less digits than its factorization.

989030237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20972.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 989030237 is about 31448.8511236897. The cubic root of 989030237 is about 996.3299596144.

The spelling of 989030237 in words is "nine hundred eighty-nine million, thirty thousand, two hundred thirty-seven".

Divisors: 1 13 19 193 247 2509 3667 20747 47671 269711 394193 4004171 5124509 52054223 76079249 989030237