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61027393 = 723741821
BaseRepresentation
bin1110100011001…
…1010001000001
311020211111211211
43220303101001
5111110334033
610020010121
71340503300
oct350632101
9136744754
1061027393
11314a2869
1218530941
13c8497ab
148168437
1555572cd
hex3a33441

61027393 has 24 divisors (see below), whose sum is σ = 74778984. Its totient is φ = 49593600.

The previous prime is 61027391. The next prime is 61027427. The reversal of 61027393 is 39372016.

It can be written as a sum of positive squares in 4 ways, for example, as 2917264 + 58110129 = 1708^2 + 7623^2 .

It is not a de Polignac number, because 61027393 - 21 = 61027391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61027391) 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 23 ways as a sum of consecutive naturals, for example, 73923 + ... + 74743.

It is an arithmetic number, because the mean of its divisors is an integer number (3115791).

Almost surely, 261027393 is an apocalyptic number.

It is an amenable number.

61027393 is a deficient number, since it is larger than the sum of its proper divisors (13751591).

61027393 is a wasteful number, since it uses less digits than its factorization.

61027393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 61027393 is about 7812.0031362001. The cubic root of 61027393 is about 393.7086343376.

The spelling of 61027393 in words is "sixty-one million, twenty-seven thousand, three hundred ninety-three".

Divisors: 1 7 37 41 49 259 287 821 1517 1813 2009 5747 10619 30377 33661 40229 74333 212639 235627 1245457 1488473 1649389 8718199 61027393