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20276941 = 179113279
BaseRepresentation
bin100110101011…
…0011011001101
31102011011201211
41031112123031
520142330231
62002334421
7334231306
oct115263315
942134654
1020276941
111049a403
12695a411
13427c4b9
14299b7ad
151ba7eb1
hex13566cd

20276941 has 4 divisors (see below), whose sum is σ = 20390400. Its totient is φ = 20163484.

The previous prime is 20276923. The next prime is 20276969. The reversal of 20276941 is 14967202.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14967202 = 27483601.

It is a cyclic number.

It is not a de Polignac number, because 20276941 - 213 = 20268749 is a prime.

It is a super-2 number, since 2×202769412 = 822308672634962, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276911) 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, 56461 + ... + 56818.

It is an arithmetic number, because the mean of its divisors is an integer number (5097600).

Almost surely, 220276941 is an apocalyptic number.

It is an amenable number.

20276941 is a deficient number, since it is larger than the sum of its proper divisors (113459).

20276941 is a wasteful number, since it uses less digits than its factorization.

20276941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113458.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20276941 is about 4502.9924494718. The cubic root of 20276941 is about 272.6889120154.

The spelling of 20276941 in words is "twenty million, two hundred seventy-six thousand, nine hundred forty-one".

Divisors: 1 179 113279 20276941