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47521968 = 2431376157
BaseRepresentation
bin1011010101001…
…0000010110000
310022102100212220
42311102002300
544131200333
64414321040
71114634004
oct265220260
9108370786
1047521968
1124908a5a
1213ab9180
139acb510
146450704
15428a8b3
hex2d520b0

47521968 has 40 divisors (see below), whose sum is σ = 132210288. Its totient is φ = 14621952.

The previous prime is 47521967. The next prime is 47522011. The reversal of 47521968 is 86912574.

It is not an unprimeable number, because it can be changed into a prime (47521967) 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, 37455 + ... + 38702.

Almost surely, 247521968 is an apocalyptic number.

47521968 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47521968 is an abundant number, since it is smaller than the sum of its proper divisors (84688320).

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

47521968 is a wasteful number, since it uses less digits than its factorization.

47521968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76181 (or 76175 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 47521968 is about 6893.6179180456. The cubic root of 47521968 is about 362.2136443255.

The spelling of 47521968 in words is "forty-seven million, five hundred twenty-one thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 39 48 52 78 104 156 208 312 624 76157 152314 228471 304628 456942 609256 913884 990041 1218512 1827768 1980082 2970123 3655536 3960164 5940246 7920328 11880492 15840656 23760984 47521968