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40712061 = 3131043899
BaseRepresentation
bin1001101101001…
…1011101111101
32211121101110010
42123103131331
540410241221
64012333433
71003022025
oct233233575
984541403
1040712061
1120a87635
1211774279
1385859a0
14559aa85
153892c76
hex26d377d

40712061 has 8 divisors (see below), whose sum is σ = 58458400. Its totient is φ = 25053552.

The previous prime is 40712051. The next prime is 40712069. The reversal of 40712061 is 16021704.

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

It is not a de Polignac number, because 40712061 - 25 = 40712029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40712069) 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, 521911 + ... + 521988.

It is an arithmetic number, because the mean of its divisors is an integer number (7307300).

Almost surely, 240712061 is an apocalyptic number.

It is an amenable number.

40712061 is a deficient number, since it is larger than the sum of its proper divisors (17746339).

40712061 is a wasteful number, since it uses less digits than its factorization.

40712061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043915.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 40712061 is about 6380.6003636022. The cubic root of 40712061 is about 344.0126105211.

Adding to 40712061 its reverse (16021704), we get a palindrome (56733765).

The spelling of 40712061 in words is "forty million, seven hundred twelve thousand, sixty-one".

Divisors: 1 3 13 39 1043899 3131697 13570687 40712061