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20072841 = 3311012137
BaseRepresentation
bin100110010010…
…0100110001001
31101202210202120
41030210212021
520114312331
61554121453
7332421255
oct114444611
941683676
1020072841
1110370028
126880289
13420a629
142947265
151b67796
hex1324989

20072841 has 16 divisors (see below), whose sum is σ = 27913728. Its totient is φ = 12816000.

The previous prime is 20072839. The next prime is 20072867. The reversal of 20072841 is 14827002.

It is not a de Polignac number, because 20072841 - 21 = 20072839 is a prime.

It is a super-2 number, since 2×200728412 = 805837891622562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20072831) 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, 8325 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (1744608).

Almost surely, 220072841 is an apocalyptic number.

It is an amenable number.

20072841 is a deficient number, since it is larger than the sum of its proper divisors (7840887).

20072841 is a wasteful number, since it uses less digits than its factorization.

20072841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 20072841 is about 4480.2724247528. The cubic root of 20072841 is about 271.7708972289.

Adding to 20072841 its reverse (14827002), we get a palindrome (34899843).

The spelling of 20072841 in words is "twenty million, seventy-two thousand, eight hundred forty-one".

Divisors: 1 3 31 93 101 303 2137 3131 6411 9393 66247 198741 215837 647511 6690947 20072841