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21044319 = 331226283
BaseRepresentation
bin101000001000…
…1110001011111
31110121011101020
41100101301133
520341404234
62031015223
7343605462
oct120216137
943534336
1021044319
11109739aa
12706a513
13448a87a
142b1b2d9
151caa549
hex1411c5f

21044319 has 8 divisors (see below), whose sum is σ = 28964352. Its totient is φ = 13576920.

The previous prime is 21044311. The next prime is 21044341. The reversal of 21044319 is 91344012.

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

It is not a de Polignac number, because 21044319 - 23 = 21044311 is a prime.

It is a super-2 number, since 2×210443192 = 885726724347522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113049 + ... + 113234.

It is an arithmetic number, because the mean of its divisors is an integer number (3620544).

Almost surely, 221044319 is an apocalyptic number.

21044319 is a deficient number, since it is larger than the sum of its proper divisors (7920033).

21044319 is a wasteful number, since it uses less digits than its factorization.

21044319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226317.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 21044319 is about 4587.4087456864. The cubic root of 21044319 is about 276.0863650116.

The spelling of 21044319 in words is "twenty-one million, forty-four thousand, three hundred nineteen".

Divisors: 1 3 31 93 226283 678849 7014773 21044319