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11443421 = 111040311
BaseRepresentation
bin101011101001…
…110011011101
3210112101102102
4223221303131
510412142141
61045134445
7166160513
oct53516335
923471372
1011443421
116506680
1239ba425
1324a8872
14173c4b3
15101099b
hexae9cdd

11443421 has 4 divisors (see below), whose sum is σ = 12483744. Its totient is φ = 10403100.

The previous prime is 11443409. The next prime is 11443441. The reversal of 11443421 is 12434411.

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.

It is a cyclic number.

It is not a de Polignac number, because 11443421 - 26 = 11443357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11443393 and 11443402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11443441) 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, 520145 + ... + 520166.

It is an arithmetic number, because the mean of its divisors is an integer number (3120936).

Almost surely, 211443421 is an apocalyptic number.

11443421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11443421 is a deficient number, since it is larger than the sum of its proper divisors (1040323).

11443421 is a wasteful number, since it uses less digits than its factorization.

11443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040322.

The product of its digits is 384, while the sum is 20.

The square root of 11443421 is about 3382.8125871824. The cubic root of 11443421 is about 225.3470922725.

Adding to 11443421 its reverse (12434411), we get a palindrome (23877832).

The spelling of 11443421 in words is "eleven million, four hundred forty-three thousand, four hundred twenty-one".

Divisors: 1 11 1040311 11443421