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19047241 = 71268271
BaseRepresentation
bin100100010101…
…0001101001001
31022211200220101
41020222031021
514334002431
61520125401
7320620213
oct110521511
938750811
1019047241
11a82a524
126466861
133c3b875
14275b5b3
151a13961
hex122a349

19047241 has 4 divisors (see below), whose sum is σ = 19315584. Its totient is φ = 18778900.

The previous prime is 19047227. The next prime is 19047251. The reversal of 19047241 is 14274091.

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 19047241 - 213 = 19039049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19047221) 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, 134065 + ... + 134206.

It is an arithmetic number, because the mean of its divisors is an integer number (4828896).

Almost surely, 219047241 is an apocalyptic number.

It is an amenable number.

19047241 is a deficient number, since it is larger than the sum of its proper divisors (268343).

19047241 is an equidigital number, since it uses as much as digits as its factorization.

19047241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268342.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19047241 is about 4364.3144937092. The cubic root of 19047241 is about 267.0611361544.

The spelling of 19047241 in words is "nineteen million, forty-seven thousand, two hundred forty-one".

Divisors: 1 71 268271 19047241