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19219241 = 191011539
BaseRepresentation
bin100100101010…
…0001100101001
31100011102211202
41021110030221
514410003431
61523533545
7322234526
oct111241451
940142752
1019219241
11a937778
12652a2b5
133c9bc42
1427a414d
151a498cb
hex1254329

19219241 has 4 divisors (see below), whose sum is σ = 20230800. Its totient is φ = 18207684.

The previous prime is 19219223. The next prime is 19219253. The reversal of 19219241 is 14291291.

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 19219241 - 26 = 19219177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19219261) 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, 505751 + ... + 505788.

It is an arithmetic number, because the mean of its divisors is an integer number (5057700).

Almost surely, 219219241 is an apocalyptic number.

It is an amenable number.

19219241 is a deficient number, since it is larger than the sum of its proper divisors (1011559).

19219241 is a wasteful number, since it uses less digits than its factorization.

19219241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011558.

The product of its digits is 1296, while the sum is 29.

The square root of 19219241 is about 4383.9754789460. The cubic root of 19219241 is about 267.8625984988.

The spelling of 19219241 in words is "nineteen million, two hundred nineteen thousand, two hundred forty-one".

Divisors: 1 19 1011539 19219241