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19976941 = 139143719
BaseRepresentation
bin100110000110…
…1001011101101
31101120221012201
41030031023231
520103230231
61552101501
7331541545
oct114151355
941527181
1019976941
1110304a76
126834891
1341a5a9a
142920325
151b49161
hex130d2ed

19976941 has 4 divisors (see below), whose sum is σ = 20120800. Its totient is φ = 19833084.

The previous prime is 19976939. The next prime is 19976947. The reversal of 19976941 is 14967991.

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 19976941 - 21 = 19976939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19976891 and 19976900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19976947) 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, 71721 + ... + 71998.

It is an arithmetic number, because the mean of its divisors is an integer number (5030200).

Almost surely, 219976941 is an apocalyptic number.

19976941 is the 2581-st hex number.

It is an amenable number.

19976941 is a deficient number, since it is larger than the sum of its proper divisors (143859).

19976941 is a wasteful number, since it uses less digits than its factorization.

19976941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143858.

The product of its digits is 122472, while the sum is 46.

The square root of 19976941 is about 4469.5571368985. The cubic root of 19976941 is about 271.3374019490.

The spelling of 19976941 in words is "nineteen million, nine hundred seventy-six thousand, nine hundred forty-one".

Divisors: 1 139 143719 19976941