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147930906 = 23172276389
BaseRepresentation
bin10001101000100…
…11111100011010
3101022100200001110
420310103330122
5300332242111
622402401150
73444251304
oct1064237432
9338320043
10147930906
1176559752
12416601b6
13248561a6
141590a974
15cec15a6
hex8d13f1a

147930906 has 32 divisors (see below), whose sum is σ = 314694720. Its totient is φ = 46198016.

The previous prime is 147930869. The next prime is 147930907. The reversal of 147930906 is 609039741.

147930906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (147930907) 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, 19960 + ... + 26348.

It is an arithmetic number, because the mean of its divisors is an integer number (9834210).

Almost surely, 2147930906 is an apocalyptic number.

147930906 is an abundant number, since it is smaller than the sum of its proper divisors (166763814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

147930906 is a wasteful number, since it uses less digits than its factorization.

147930906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 147930906 is about 12162.6849831770. The cubic root of 147930906 is about 528.8749196546.

It can be divided in two parts, 1479 and 30906, that added together give a triangular number (32385 = T254).

The spelling of 147930906 in words is "one hundred forty-seven million, nine hundred thirty thousand, nine hundred six".

Divisors: 1 2 3 6 17 34 51 102 227 454 681 1362 3859 6389 7718 11577 12778 19167 23154 38334 108613 217226 325839 651678 1450303 2900606 4350909 8701818 24655151 49310302 73965453 147930906