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61385092 = 2297158209
BaseRepresentation
bin1110101000101…
…0100110000100
311021111200111221
43222022212010
5111203310332
610031410124
71343523166
oct352124604
9137450457
1061385092
113171758a
1218683944
13c943552
14821c936
1555c8297
hex3a8a984

61385092 has 12 divisors (see below), whose sum is σ = 108532060. Its totient is φ = 30375936.

The previous prime is 61385089. The next prime is 61385099. The reversal of 61385092 is 29058316.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 44542276 = 4104^2 + 6674^2 .

It is not an unprimeable number, because it can be changed into a prime (61385099) 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 3 ways as a sum of consecutive naturals, for example, 78717 + ... + 79492.

Almost surely, 261385092 is an apocalyptic number.

It is an amenable number.

61385092 is a deficient number, since it is larger than the sum of its proper divisors (47146968).

61385092 is a wasteful number, since it uses less digits than its factorization.

61385092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158310 (or 158308 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 61385092 is about 7834.8638788431. The cubic root of 61385092 is about 394.4763493130.

The spelling of 61385092 in words is "sixty-one million, three hundred eighty-five thousand, ninety-two".

Divisors: 1 2 4 97 194 388 158209 316418 632836 15346273 30692546 61385092