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22802081 = 31977583
BaseRepresentation
bin101011011111…
…0111010100001
31120220110120112
41112332322201
521314131311
62132421105
7364546241
oct126767241
946813515
1022802081
11119645a5
127777795
134954973
143057b21
15200628b
hex15beea1

22802081 has 8 divisors (see below), whose sum is σ = 23783424. Its totient is φ = 21836160.

The previous prime is 22802069. The next prime is 22802089. The reversal of 22802081 is 18020822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22802081 is a prime.

It is a super-2 number, since 2×228020812 = 1039869795861122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22802089) 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, 785 + ... + 6798.

It is an arithmetic number, because the mean of its divisors is an integer number (2972928).

Almost surely, 222802081 is an apocalyptic number.

It is an amenable number.

22802081 is a deficient number, since it is larger than the sum of its proper divisors (981343).

22802081 is an equidigital number, since it uses as much as digits as its factorization.

22802081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 22802081 is about 4775.1524582991. The cubic root of 22802081 is about 283.5686145635.

The spelling of 22802081 in words is "twenty-two million, eight hundred two thousand, eighty-one".

Divisors: 1 31 97 3007 7583 235073 735551 22802081