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61090029 = 32711136781
BaseRepresentation
bin1110100100001…
…0100011101101
311020221200202200
43221002203231
5111114340104
610021212113
71341154020
oct351024355
9136850680
1061090029
1131535930
1218561039
13c86c160
1481831b7
15556ab39
hex3a428ed

61090029 has 48 divisors (see below), whose sum is σ = 118495104. Its totient is φ = 29289600.

The previous prime is 61090019. The next prime is 61090039. The reversal of 61090029 is 92009016.

It is a happy number.

61090029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61090019) and next prime (61090039).

It is not a de Polignac number, because 61090029 - 27 = 61089901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61089984 and 61090011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61090009) 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 47 ways as a sum of consecutive naturals, for example, 5619 + ... + 12399.

It is an arithmetic number, because the mean of its divisors is an integer number (2468648).

Almost surely, 261090029 is an apocalyptic number.

It is an amenable number.

61090029 is a deficient number, since it is larger than the sum of its proper divisors (57405075).

61090029 is a wasteful number, since it uses less digits than its factorization.

61090029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 61090029 is about 7816.0110670341. The cubic root of 61090029 is about 393.8432837184.

The spelling of 61090029 in words is "sixty-one million, ninety thousand, twenty-nine".

Divisors: 1 3 7 9 11 13 21 33 39 63 77 91 99 117 143 231 273 429 693 819 1001 1287 3003 6781 9009 20343 47467 61029 74591 88153 142401 223773 264459 427203 522137 617071 671319 793377 969683 1566411 1851213 2909049 4699233 5553639 6787781 8727147 20363343 61090029