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47678380 = 2252383919
BaseRepresentation
bin1011010111100…
…0001110101100
310022201022102221
42311320032230
544201202010
64421525124
71116155011
oct265701654
9108638387
1047678380
1124a05522
1213b737a4
139b54779
146491708
1542bbdda
hex2d783ac

47678380 has 12 divisors (see below), whose sum is σ = 100124640. Its totient is φ = 19071344.

The previous prime is 47678369. The next prime is 47678381. The reversal of 47678380 is 8387674.

It is not an unprimeable number, because it can be changed into a prime (47678381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191940 + ... + 1191979.

It is an arithmetic number, because the mean of its divisors is an integer number (8343720).

Almost surely, 247678380 is an apocalyptic number.

It is an amenable number.

47678380 is an abundant number, since it is smaller than the sum of its proper divisors (52446260).

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

47678380 is a wasteful number, since it uses less digits than its factorization.

47678380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383928 (or 2383926 counting only the distinct ones).

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

The square root of 47678380 is about 6904.9532945560. The cubic root of 47678380 is about 362.6106012098.

The spelling of 47678380 in words is "forty-seven million, six hundred seventy-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 2383919 4767838 9535676 11919595 23839190 47678380