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19429045 = 517228577
BaseRepresentation
bin100101000011…
…1011010110101
31100120002122021
41022013122311
514433212140
61532233141
7324100306
oct112073265
940502567
1019429045
11aa70369
12660b7b1
13404359c
14281a7ad
151a8bb4a
hex12876b5

19429045 has 8 divisors (see below), whose sum is σ = 24686424. Its totient is φ = 14628864.

The previous prime is 19429037. The next prime is 19429073. The reversal of 19429045 is 54092491.

It can be written as a sum of positive squares in 4 ways, for example, as 576081 + 18852964 = 759^2 + 4342^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19429045 - 23 = 19429037 is a prime.

It is a super-2 number, since 2×194290452 = 754975579224050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19429045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114204 + ... + 114373.

It is an arithmetic number, because the mean of its divisors is an integer number (3085803).

Almost surely, 219429045 is an apocalyptic number.

It is an amenable number.

19429045 is a deficient number, since it is larger than the sum of its proper divisors (5257379).

19429045 is a wasteful number, since it uses less digits than its factorization.

19429045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228599.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 19429045 is about 4407.8390397110. The cubic root of 19429045 is about 268.8337672895.

The spelling of 19429045 in words is "nineteen million, four hundred twenty-nine thousand, forty-five".

Divisors: 1 5 17 85 228577 1142885 3885809 19429045