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47612020 = 2255344917
BaseRepresentation
bin1011010110100…
…0000001110100
310022120221102011
42311220001310
544142041040
64420254004
71115460361
oct265500164
9108527364
1047612020
112496a685
1213b41304
139b304c1
146475468
1542a73ea
hex2d68074

47612020 has 24 divisors (see below), whose sum is σ = 101874024. Its totient is φ = 18685056.

The previous prime is 47612017. The next prime is 47612023. The reversal of 47612020 is 2021674.

47612020 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47612017) and next prime (47612023).

It can be written as a sum of positive squares in 4 ways, for example, as 2292196 + 45319824 = 1514^2 + 6732^2 .

47612020 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 47611982 and 47612000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47612023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21399 + ... + 23518.

It is an arithmetic number, because the mean of its divisors is an integer number (4244751).

Almost surely, 247612020 is an apocalyptic number.

It is an amenable number.

47612020 is an abundant number, since it is smaller than the sum of its proper divisors (54262004).

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

47612020 is a wasteful number, since it uses less digits than its factorization.

47612020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44979 (or 44977 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 47612020 is about 6900.1463752590. The cubic root of 47612020 is about 362.4422928354.

Adding to 47612020 its reverse (2021674), we get a palindrome (49633694).

The spelling of 47612020 in words is "forty-seven million, six hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 44917 89834 179668 224585 449170 898340 2380601 4761202 9522404 11903005 23806010 47612020