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3120197 = 17296329
BaseRepresentation
bin1011111001110001000101
312212112002212
423321301011
51244321242
6150513205
735343533
oct13716105
95775085
103120197
111841283
121065805
13853292
145b3153
15419782
hex2f9c45

3120197 has 8 divisors (see below), whose sum is σ = 3418200. Its totient is φ = 2834944.

The previous prime is 3120137. The next prime is 3120217. The reversal of 3120197 is 7910213.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 1852321 = 1126^2 + 1361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3120197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2672 + ... + 3657.

It is an arithmetic number, because the mean of its divisors is an integer number (427275).

Almost surely, 23120197 is an apocalyptic number.

It is an amenable number.

3120197 is a deficient number, since it is larger than the sum of its proper divisors (298003).

3120197 is a wasteful number, since it uses less digits than its factorization.

3120197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 3120197 is about 1766.4079370293. The cubic root of 3120197 is about 146.1259468659.

The spelling of 3120197 in words is "three million, one hundred twenty thousand, one hundred ninety-seven".

Divisors: 1 17 29 493 6329 107593 183541 3120197