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19007141 = 38349627
BaseRepresentation
bin100100010000…
…0011010100101
31022202122220012
41020200122211
514331212031
61515220005
7320362256
oct110403245
938678805
1019007141
11a80238a
126447605
133c2653a
14274ab2d
151a06b2b
hex12206a5

19007141 has 4 divisors (see below), whose sum is σ = 19057152. Its totient is φ = 18957132.

The previous prime is 19007119. The next prime is 19007147. The reversal of 19007141 is 14170091.

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 19007141 - 26 = 19007077 is a prime.

It is a super-2 number, since 2×190071412 = 722542817987762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19007147) 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, 24431 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (4764288).

Almost surely, 219007141 is an apocalyptic number.

It is an amenable number.

19007141 is a deficient number, since it is larger than the sum of its proper divisors (50011).

19007141 is an equidigital number, since it uses as much as digits as its factorization.

19007141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50010.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 19007141 is about 4359.7179954671. The cubic root of 19007141 is about 266.8735906081.

The spelling of 19007141 in words is "nineteen million, seven thousand, one hundred forty-one".

Divisors: 1 383 49627 19007141