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20504054 = 297105691
BaseRepresentation
bin100111000110…
…1110111110110
31102120201021102
41032031313312
520222112204
62011250102
7336165404
oct116156766
942521242
1020504054
1110634aaa
126a49932
13432b99c
142a1a474
151c0041e
hex138ddf6

20504054 has 8 divisors (see below), whose sum is σ = 31073448. Its totient is φ = 10146240.

The previous prime is 20504053. The next prime is 20504101. The reversal of 20504054 is 45040502.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504053) 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, 52652 + ... + 53039.

It is an arithmetic number, because the mean of its divisors is an integer number (3884181).

Almost surely, 220504054 is an apocalyptic number.

20504054 is a deficient number, since it is larger than the sum of its proper divisors (10569394).

20504054 is a wasteful number, since it uses less digits than its factorization.

20504054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105790.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 20504054 is about 4528.1402363443. The cubic root of 20504054 is about 273.7032235221.

Adding to 20504054 its reverse (45040502), we get a palindrome (65544556).

The spelling of 20504054 in words is "twenty million, five hundred four thousand, fifty-four".

Divisors: 1 2 97 194 105691 211382 10252027 20504054