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20960481 = 367104281
BaseRepresentation
bin100111111110…
…1010011100001
31110102220101010
41033331103201
520331213411
62025131133
7343106163
oct117752341
943386333
1020960481
1110916a13
127029aa9
13445b669
142ad8933
151c907a6
hex13fd4e1

20960481 has 8 divisors (see below), whose sum is σ = 28364704. Its totient is φ = 13764960.

The previous prime is 20960453. The next prime is 20960497. The reversal of 20960481 is 18406902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20960481 - 27 = 20960353 is a prime.

It is a super-2 number, since 2×209604812 = 878683527502722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20960431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51940 + ... + 52341.

It is an arithmetic number, because the mean of its divisors is an integer number (3545588).

Almost surely, 220960481 is an apocalyptic number.

It is an amenable number.

20960481 is a deficient number, since it is larger than the sum of its proper divisors (7404223).

20960481 is a wasteful number, since it uses less digits than its factorization.

20960481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104351.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20960481 is about 4578.2617880589. The cubic root of 20960481 is about 275.7192455920.

The spelling of 20960481 in words is "twenty million, nine hundred sixty thousand, four hundred eighty-one".

Divisors: 1 3 67 201 104281 312843 6986827 20960481