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47968005 = 3531432399
BaseRepresentation
bin1011011011111…
…0111100000101
310100021000201210
42312332330011
544234434010
64432042033
71121502261
oct266767405
9110230653
1047968005
1125093088
1214093319
139c26547
1465290a1
154327b20
hex2dbef05

47968005 has 32 divisors (see below), whose sum is σ = 81100800. Its totient is φ = 24171840.

The previous prime is 47967977. The next prime is 47968009. The reversal of 47968005 is 50086974.

It is not a de Polignac number, because 47968005 - 25 = 47967973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47968009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18796 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (2534400).

Almost surely, 247968005 is an apocalyptic number.

47968005 is the 3999-th octagonal number.

It is an amenable number.

47968005 is a deficient number, since it is larger than the sum of its proper divisors (33132795).

47968005 is a wasteful number, since it uses less digits than its factorization.

47968005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 47968005 is about 6925.8938051345. The cubic root of 47968005 is about 363.3433523222.

The spelling of 47968005 in words is "forty-seven million, nine hundred sixty-eight thousand, five".

Divisors: 1 3 5 15 31 43 93 129 155 215 465 645 1333 2399 3999 6665 7197 11995 19995 35985 74369 103157 223107 309471 371845 515785 1115535 1547355 3197867 9593601 15989335 47968005