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47813020 = 2256139191
BaseRepresentation
bin1011011001100…
…1000110011100
310022222011010121
42312121012130
544220004040
64424444324
71120255363
oct266310634
9108864117
1047813020
1124a976a2
12140196a4
139ba0b38
1464c87da
1542e6c4a
hex2d9919c

47813020 has 24 divisors (see below), whose sum is σ = 102055968. Its totient is φ = 18811200.

The previous prime is 47812981. The next prime is 47813023. The reversal of 47813020 is 2031874.

47813020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47813023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18376 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (4252332).

Almost surely, 247813020 is an apocalyptic number.

It is an amenable number.

47813020 is an abundant number, since it is smaller than the sum of its proper divisors (54242948).

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

47813020 is a wasteful number, since it uses less digits than its factorization.

47813020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39261 (or 39259 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 47813020 is about 6914.6959441468. The cubic root of 47813020 is about 362.9516083701.

Adding to 47813020 its reverse (2031874), we get a palindrome (49844894).

The spelling of 47813020 in words is "forty-seven million, eight hundred thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 39191 78382 156764 195955 391910 783820 2390651 4781302 9562604 11953255 23906510 47813020