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64120107 = 3179831279
BaseRepresentation
bin1111010010011…
…0010100101011
311110122122020210
43310212110223
5112403320412
610210152203
71406004042
oct364462453
9143578223
1064120107
1133215427
1219582663
13103903bc
148731559
15596883c
hex3d2652b

64120107 has 16 divisors (see below), whose sum is σ = 90685440. Its totient is φ = 40159872.

The previous prime is 64120099. The next prime is 64120129. The reversal of 64120107 is 70102146.

It is not a de Polignac number, because 64120107 - 23 = 64120099 is a prime.

It is a super-2 number, since 2×641201072 = 8222776243382898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64128107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49494 + ... + 50772.

It is an arithmetic number, because the mean of its divisors is an integer number (5667840).

Almost surely, 264120107 is an apocalyptic number.

64120107 is a deficient number, since it is larger than the sum of its proper divisors (26565333).

64120107 is a wasteful number, since it uses less digits than its factorization.

64120107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 64120107 is about 8007.5031689035. The cubic root of 64120107 is about 400.2500665509.

The spelling of 64120107 in words is "sixty-four million, one hundred twenty thousand, one hundred seven".

Divisors: 1 3 17 51 983 1279 2949 3837 16711 21743 50133 65229 1257257 3771771 21373369 64120107