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19392007 = 21439049
BaseRepresentation
bin100100111111…
…0011000000111
31100111012211111
41021332120013
514431021012
61531345451
7323554315
oct111763007
940435744
1019392007
11aa45558
1265b2287
13402c77b
14280b0b5
151a80ba7
hex127e607

19392007 has 4 divisors (see below), whose sum is σ = 19403200. Its totient is φ = 19380816.

The previous prime is 19391993. The next prime is 19392031. The reversal of 19392007 is 70029391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70029391 = 103679897.

It is a cyclic number.

It is not a de Polignac number, because 19392007 - 211 = 19389959 is a prime.

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 19392007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19392047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2382 + ... + 6667.

It is an arithmetic number, because the mean of its divisors is an integer number (4850800).

Almost surely, 219392007 is an apocalyptic number.

19392007 is a deficient number, since it is larger than the sum of its proper divisors (11193).

19392007 is an equidigital number, since it uses as much as digits as its factorization.

19392007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 19392007 is about 4403.6356570452. The cubic root of 19392007 is about 268.6628307886.

The spelling of 19392007 in words is "nineteen million, three hundred ninety-two thousand, seven".

Divisors: 1 2143 9049 19392007