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27679029 = 371969371
BaseRepresentation
bin110100110010…
…1100100110101
31221002020111020
41221211210311
524041212104
62425131353
7454160610
oct151454465
957066436
1027679029
1114695734
129329b59
135971731
143967177
15266b2d9
hex1a65935

27679029 has 16 divisors (see below), whose sum is σ = 44398080. Its totient is φ = 14983920.

The previous prime is 27679019. The next prime is 27679033. The reversal of 27679029 is 92097672.

It is not a de Polignac number, because 27679029 - 213 = 27670837 is a prime.

It is a super-2 number, since 2×276790292 = 1532257292765682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27679019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34287 + ... + 35084.

It is an arithmetic number, because the mean of its divisors is an integer number (2774880).

Almost surely, 227679029 is an apocalyptic number.

It is an amenable number.

27679029 is a deficient number, since it is larger than the sum of its proper divisors (16719051).

27679029 is a wasteful number, since it uses less digits than its factorization.

27679029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69400.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 27679029 is about 5261.0862946734. The cubic root of 27679029 is about 302.4941291577.

The spelling of 27679029 in words is "twenty-seven million, six hundred seventy-nine thousand, twenty-nine".

Divisors: 1 3 7 19 21 57 133 399 69371 208113 485597 1318049 1456791 3954147 9226343 27679029