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47900061 = 3211483839
BaseRepresentation
bin1011011010111…
…0010110011101
310100010120112100
42312232112131
544230300221
64430355313
71121100216
oct266562635
9110116470
1047900061
1125047030
121405bb39
139c01641
14650c40d
154312926
hex2dae59d

47900061 has 12 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 29030280.

The previous prime is 47900059. The next prime is 47900071. The reversal of 47900061 is 16000974.

It is not a de Polignac number, because 47900061 - 21 = 47900059 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47899998 and 47900034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47900051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241821 + ... + 242018.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 247900061 is an apocalyptic number.

It is an amenable number.

47900061 is a deficient number, since it is larger than the sum of its proper divisors (27578979).

47900061 is a wasteful number, since it uses less digits than its factorization.

47900061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483856 (or 483853 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 47900061 is about 6920.9869960866. The cubic root of 47900061 is about 363.1717194054.

The spelling of 47900061 in words is "forty-seven million, nine hundred thousand, sixty-one".

Divisors: 1 3 9 11 33 99 483839 1451517 4354551 5322229 15966687 47900061