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4384385 = 51751581
BaseRepresentation
bin10000101110011010000001
322020202020122
4100232122001
52110300020
6233550025
752160315
oct20563201
98222218
104384385
112525065
121575315
13ba6815
14821b45
155b9125
hex42e681

4384385 has 8 divisors (see below), whose sum is σ = 5570856. Its totient is φ = 3301120.

The previous prime is 4384379. The next prime is 4384433. The reversal of 4384385 is 5834834.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53824 + 4330561 = 232^2 + 2081^2 .

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

It is not a de Polignac number, because 4384385 - 28 = 4384129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25706 + ... + 25875.

It is an arithmetic number, because the mean of its divisors is an integer number (696357).

Almost surely, 24384385 is an apocalyptic number.

It is an amenable number.

4384385 is a deficient number, since it is larger than the sum of its proper divisors (1186471).

4384385 is a wasteful number, since it uses less digits than its factorization.

4384385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51603.

The product of its digits is 46080, while the sum is 35.

The square root of 4384385 is about 2093.8923085966. The cubic root of 4384385 is about 163.6701803941.

The spelling of 4384385 in words is "four million, three hundred eighty-four thousand, three hundred eighty-five".

Divisors: 1 5 17 85 51581 257905 876877 4384385