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4869905 = 517234753
BaseRepresentation
bin10010100100111100010001
3100011102020212
4102210330101
52221314110
6252213505
756251655
oct22447421
910142225
104869905
112826917
12176a295
131016801
1490aa65
15662e05
hex4a4f11

4869905 has 32 divisors (see below), whose sum is σ = 6718464. Its totient is φ = 3367936.

The previous prime is 4869889. The next prime is 4869911. The reversal of 4869905 is 5099684.

It is not a de Polignac number, because 4869905 - 24 = 4869889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91859 + ... + 91911.

It is an arithmetic number, because the mean of its divisors is an integer number (209952).

Almost surely, 24869905 is an apocalyptic number.

4869905 is the 1802-nd pentagonal number.

It is an amenable number.

4869905 is a deficient number, since it is larger than the sum of its proper divisors (1848559).

4869905 is a wasteful number, since it uses less digits than its factorization.

4869905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 4869905 is about 2206.7861246618. The cubic root of 4869905 is about 169.5014807144.

The spelling of 4869905 in words is "four million, eight hundred sixty-nine thousand, nine hundred five".

Divisors: 1 5 17 23 47 53 85 115 235 265 391 799 901 1081 1219 1955 2491 3995 4505 5405 6095 12455 18377 20723 42347 57293 91885 103615 211735 286465 973981 4869905