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20061006 = 237677129
BaseRepresentation
bin100110010000…
…1101101001110
31101202012112020
41030201231032
520113423011
61553551010
7332341620
oct114415516
941665466
1020061006
1110362149
126875466
134205124
142942c10
151b64006
hex1321b4e

20061006 has 32 divisors (see below), whose sum is σ = 46544640. Its totient is φ = 5645376.

The previous prime is 20060981. The next prime is 20061007. The reversal of 20061006 is 60016002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (1454520).

Almost surely, 220061006 is an apocalyptic number.

20061006 is an abundant number, since it is smaller than the sum of its proper divisors (26483634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20061006 is a wasteful number, since it uses less digits than its factorization.

20061006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20061006 is about 4478.9514397903. The cubic root of 20061006 is about 271.7174744488.

Adding to 20061006 its reverse (60016002), we get a palindrome (80077008).

The spelling of 20061006 in words is "twenty million, sixty-one thousand, six".

Divisors: 1 2 3 6 7 14 21 42 67 134 201 402 469 938 1407 2814 7129 14258 21387 42774 49903 99806 149709 299418 477643 955286 1432929 2865858 3343501 6687002 10030503 20061006