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20702054 = 221149057
BaseRepresentation
bin100111011111…
…0001101100110
31102221202212202
41032332031212
520244431204
62015414502
7340651562
oct116761546
942852782
1020702054
111075a83a
126b24432
13439ab49
142a6c6a2
151c3de1e
hex13be366

20702054 has 8 divisors (see below), whose sum is σ = 31200888. Its totient is φ = 10301760.

The previous prime is 20702053. The next prime is 20702057. The reversal of 20702054 is 45020702.

20702054 is nontrivially palindromic in base 14.

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 (20702051) 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, 24107 + ... + 24950.

It is an arithmetic number, because the mean of its divisors is an integer number (3900111).

Almost surely, 220702054 is an apocalyptic number.

20702054 is a deficient number, since it is larger than the sum of its proper divisors (10498834).

20702054 is a wasteful number, since it uses less digits than its factorization.

20702054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20702054 is about 4549.9509887470. The cubic root of 20702054 is about 274.5814193953.

Adding to 20702054 its reverse (45020702), we get a palindrome (65722756).

The spelling of 20702054 in words is "twenty million, seven hundred two thousand, fifty-four".

Divisors: 1 2 211 422 49057 98114 10351027 20702054