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70512047 = 3711231697
BaseRepresentation
bin1000011001111…
…10110110101111
311220200101100022
410030332312233
5121022341142
610555152355
71514225324
oct414766657
9156611308
1070512047
1136890821
121b7456bb
13117ba908
149516b4b
1562cc6d2
hex433edaf

70512047 has 8 divisors (see below), whose sum is σ = 72524976. Its totient is φ = 68504832.

The previous prime is 70512041. The next prime is 70512083. The reversal of 70512047 is 74021507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70512047 - 212 = 70507951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70512041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40703 + ... + 42399.

It is an arithmetic number, because the mean of its divisors is an integer number (9065622).

Almost surely, 270512047 is an apocalyptic number.

70512047 is a deficient number, since it is larger than the sum of its proper divisors (2012929).

70512047 is a wasteful number, since it uses less digits than its factorization.

70512047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 70512047 is about 8397.1451696395. The cubic root of 70512047 is about 413.1309904660.

The spelling of 70512047 in words is "seventy million, five hundred twelve thousand, forty-seven".

Divisors: 1 37 1123 1697 41551 62789 1905731 70512047