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11904385 = 52380877
BaseRepresentation
bin101101011010…
…010110000001
3211101210202011
4231122112001
511021420020
61103052521
7203120443
oct55322601
924353664
1011904385
1167a0a39
123ba1141
13260a61c
14181c493
1510a235a
hexb5a581

11904385 has 4 divisors (see below), whose sum is σ = 14285268. Its totient is φ = 9523504.

The previous prime is 11904367. The next prime is 11904397. The reversal of 11904385 is 58340911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58340911 = 59988829.

It can be written as a sum of positive squares in 2 ways, for example, as 2226064 + 9678321 = 1492^2 + 3111^2 .

It is a cyclic number.

It is not a de Polignac number, because 11904385 - 25 = 11904353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190434 + ... + 1190443.

It is an arithmetic number, because the mean of its divisors is an integer number (3571317).

Almost surely, 211904385 is an apocalyptic number.

It is an amenable number.

11904385 is a deficient number, since it is larger than the sum of its proper divisors (2380883).

11904385 is an equidigital number, since it uses as much as digits as its factorization.

11904385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380882.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 11904385 is about 3450.2731775904. The cubic root of 11904385 is about 228.3331604713. Note that the first 3 decimals are identical.

The spelling of 11904385 in words is "eleven million, nine hundred four thousand, three hundred eighty-five".

Divisors: 1 5 2380877 11904385