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20650948 = 2219271723
BaseRepresentation
bin100111011000…
…1101111000100
31102212011202221
41032301233010
520241312243
62014342124
7340346563
oct116615704
942764687
1020650948
11107253aa
126aba944
1343807c6
142a57bda
151c2dbed
hex13b1bc4

20650948 has 12 divisors (see below), whose sum is σ = 38041360. Its totient is φ = 9781992.

The previous prime is 20650943. The next prime is 20650951. The reversal of 20650948 is 84905602.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20650943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135786 + ... + 135937.

Almost surely, 220650948 is an apocalyptic number.

It is an amenable number.

20650948 is a deficient number, since it is larger than the sum of its proper divisors (17390412).

20650948 is a wasteful number, since it uses less digits than its factorization.

20650948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271746 (or 271744 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20650948 is about 4544.3314139706. The cubic root of 20650948 is about 274.3552852933.

The spelling of 20650948 in words is "twenty million, six hundred fifty thousand, nine hundred forty-eight".

Divisors: 1 2 4 19 38 76 271723 543446 1086892 5162737 10325474 20650948