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3680073 = 3445433
BaseRepresentation
bin1110000010011101001001
320220222010000
432002131021
51420230243
6210513213
743165035
oct16023511
96828100
103680073
112093991
121295809
139bb077
146bb1c5
154ca5d3
hex382749

3680073 has 10 divisors (see below), whose sum is σ = 5497514. Its totient is φ = 2453328.

The previous prime is 3680059. The next prime is 3680081. The reversal of 3680073 is 3700863.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3674889 + 5184 = 1917^2 + 72^2 .

It is not a de Polignac number, because 3680073 - 28 = 3679817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3680093) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22636 + ... + 22797.

Almost surely, 23680073 is an apocalyptic number.

It is an amenable number.

3680073 is a deficient number, since it is larger than the sum of its proper divisors (1817441).

3680073 is an equidigital number, since it uses as much as digits as its factorization.

3680073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45445 (or 45436 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3680073 is about 1918.3516361710. The cubic root of 3680073 is about 154.3898734488.

The spelling of 3680073 in words is "three million, six hundred eighty thousand, seventy-three".

Divisors: 1 3 9 27 81 45433 136299 408897 1226691 3680073