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47930190 = 23571120749
BaseRepresentation
bin1011011011010…
…1101101001110
310100012002212020
42312311231032
544232231230
64431151010
71121254110
oct266655516
9110162766
1047930190
1125067730
1214075466
139c12279
1465193b0
15431b810
hex2db5b4e

47930190 has 64 divisors (see below), whose sum is σ = 143424000. Its totient is φ = 9959040.

The previous prime is 47930173. The next prime is 47930203. The reversal of 47930190 is 9103974.

It is a super-2 number, since 2×479301902 = 4594606226872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8065 + ... + 12684.

It is an arithmetic number, because the mean of its divisors is an integer number (2241000).

Almost surely, 247930190 is an apocalyptic number.

47930190 is an abundant number, since it is smaller than the sum of its proper divisors (95493810).

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

47930190 is a wasteful number, since it uses less digits than its factorization.

47930190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20777.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 47930190 is about 6923.1632943330. The cubic root of 47930190 is about 363.2478481002.

The spelling of 47930190 in words is "forty-seven million, nine hundred thirty thousand, one hundred ninety".

Divisors: 1 2 3 5 6 7 10 11 14 15 21 22 30 33 35 42 55 66 70 77 105 110 154 165 210 231 330 385 462 770 1155 2310 20749 41498 62247 103745 124494 145243 207490 228239 290486 311235 435729 456478 622470 684717 726215 871458 1141195 1369434 1452430 1597673 2178645 2282390 3195346 3423585 4357290 4793019 6847170 7988365 9586038 15976730 23965095 47930190