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20482161 = 371757373
BaseRepresentation
bin100111000100…
…0100001110001
31102112121020120
41032020201301
520220412121
62011000453
7336044520
oct116104161
942477216
1020482161
111061a607
126a39129
134321a2b
142a124b7
151be8bc6
hex1388871

20482161 has 16 divisors (see below), whose sum is σ = 33047424. Its totient is φ = 11015424.

The previous prime is 20482157. The next prime is 20482183. The reversal of 20482161 is 16128402.

It is not a de Polignac number, because 20482161 - 22 = 20482157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20483161) 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, 28330 + ... + 29043.

It is an arithmetic number, because the mean of its divisors is an integer number (2065464).

Almost surely, 220482161 is an apocalyptic number.

20482161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20482161 is a deficient number, since it is larger than the sum of its proper divisors (12565263).

20482161 is a wasteful number, since it uses less digits than its factorization.

20482161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57400.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20482161 is about 4525.7221523200. The cubic root of 20482161 is about 273.6057741976.

The spelling of 20482161 in words is "twenty million, four hundred eighty-two thousand, one hundred sixty-one".

Divisors: 1 3 7 17 21 51 119 357 57373 172119 401611 975341 1204833 2926023 6827387 20482161