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47038830 = 2351792233
BaseRepresentation
bin1011001101110…
…0000101101110
310021111211010220
42303130011232
544020220310
64400112210
71110552306
oct263340556
9107454126
1047038830
1124608a73
1213905666
13998c637
146366606
1541e2670
hex2cdc16e

47038830 has 32 divisors (see below), whose sum is σ = 119535264. Its totient is φ = 11805696.

The previous prime is 47038829. The next prime is 47038837. The reversal of 47038830 is 3883074.

It is a junction number, because it is equal to n+sod(n) for n = 47038791 and 47038800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47038837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45607 + ... + 46626.

It is an arithmetic number, because the mean of its divisors is an integer number (3735477).

Almost surely, 247038830 is an apocalyptic number.

47038830 is an abundant number, since it is smaller than the sum of its proper divisors (72496434).

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

47038830 is a wasteful number, since it uses less digits than its factorization.

47038830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92260.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 47038830 is about 6858.4859845304. The cubic root of 47038830 is about 360.9819641442.

The spelling of 47038830 in words is "forty-seven million, thirty-eight thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 92233 184466 276699 461165 553398 922330 1383495 1567961 2766990 3135922 4703883 7839805 9407766 15679610 23519415 47038830