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3906861 = 37186041
BaseRepresentation
bin1110111001110100101101
321100111012120
432321310231
52000004421
6215423153
745131160
oct16716455
97314176
103906861
112229312
121384ab9
13a6a36a
14739ad7
155228c6
hex3b9d2d

3906861 has 8 divisors (see below), whose sum is σ = 5953344. Its totient is φ = 2232480.

The previous prime is 3906857. The next prime is 3906863. The reversal of 3906861 is 1686093.

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

It is not a de Polignac number, because 3906861 - 22 = 3906857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906863) 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, 93000 + ... + 93041.

It is an arithmetic number, because the mean of its divisors is an integer number (744168).

Almost surely, 23906861 is an apocalyptic number.

It is an amenable number.

3906861 is a deficient number, since it is larger than the sum of its proper divisors (2046483).

3906861 is a wasteful number, since it uses less digits than its factorization.

3906861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186051.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3906861 is about 1976.5781036934. The cubic root of 3906861 is about 157.4983421342.

The spelling of 3906861 in words is "three million, nine hundred six thousand, eight hundred sixty-one".

Divisors: 1 3 7 21 186041 558123 1302287 3906861