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10104649 = 71142319
BaseRepresentation
bin100110100010…
…111101001001
3201000100222021
4212202331021
510041322044
61000324441
7151613422
oct46427511
921010867
1010104649
115781855
123473721
13212a3a9
1414b0649
15d48e84
hex9a2f49

10104649 has 4 divisors (see below), whose sum is σ = 10247040. Its totient is φ = 9962260.

The previous prime is 10104643. The next prime is 10104697. The reversal of 10104649 is 94640101.

10104649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94640101 = 234114787.

It is a cyclic number.

It is not a de Polignac number, because 10104649 - 23 = 10104641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10104641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71089 + ... + 71230.

It is an arithmetic number, because the mean of its divisors is an integer number (2561760).

Almost surely, 210104649 is an apocalyptic number.

It is an amenable number.

10104649 is a deficient number, since it is larger than the sum of its proper divisors (142391).

10104649 is an equidigital number, since it uses as much as digits as its factorization.

10104649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142390.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 10104649 is about 3178.7810556879. The cubic root of 10104649 is about 216.1923940248.

The spelling of 10104649 in words is "ten million, one hundred four thousand, six hundred forty-nine".

Divisors: 1 71 142319 10104649