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47808148 = 22171016961
BaseRepresentation
bin1011011001011…
…1111010010100
310022221220110011
42312113322110
544214330043
64424410004
71120235233
oct266277224
9108856404
1047808148
1124a93a73
1214016904
139b9b85b
1464c6b1a
1542e559d
hex2d97e94

47808148 has 24 divisors (see below), whose sum is σ = 89475624. Its totient is φ = 22272000.

The previous prime is 47808143. The next prime is 47808149. The reversal of 47808148 is 84180874.

It can be written as a sum of positive squares in 4 ways, for example, as 33154564 + 14653584 = 5758^2 + 3828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47808148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47808143) 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, 3388 + ... + 10348.

It is an arithmetic number, because the mean of its divisors is an integer number (3728151).

Almost surely, 247808148 is an apocalyptic number.

It is an amenable number.

47808148 is a deficient number, since it is larger than the sum of its proper divisors (41667476).

47808148 is a wasteful number, since it uses less digits than its factorization.

47808148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083 (or 7081 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 47808148 is about 6914.3436420242. The cubic root of 47808148 is about 362.9392800663.

The spelling of 47808148 in words is "forty-seven million, eight hundred eight thousand, one hundred forty-eight".

Divisors: 1 2 4 17 34 68 101 202 404 1717 3434 6868 6961 13922 27844 118337 236674 473348 703061 1406122 2812244 11952037 23904074 47808148