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8742061 = 41792699
BaseRepresentation
bin100001010110…
…010010101101
3121110010212001
4201112102231
54214221221
6511212301
7134210026
oct41262255
917403761
108742061
114a31049
122b17091
131a71123
141237c4d
15b7a391
hex8564ad

8742061 has 8 divisors (see below), whose sum is σ = 9072000. Its totient is φ = 8417760.

The previous prime is 8742059. The next prime is 8742067. The reversal of 8742061 is 1602478.

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 8742061 - 21 = 8742059 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 (8742067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 4588.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 28742061 is an apocalyptic number.

It is an amenable number.

8742061 is a deficient number, since it is larger than the sum of its proper divisors (329939).

8742061 is a wasteful number, since it uses less digits than its factorization.

8742061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8742061 is about 2956.6976510966. The cubic root of 8742061 is about 206.0019244487.

The spelling of 8742061 in words is "eight million, seven hundred forty-two thousand, sixty-one".

Divisors: 1 41 79 2699 3239 110659 213221 8742061