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23154081 = 343239751
BaseRepresentation
bin101100001010…
…0110110100001
31121120100102120
41120110312201
521411412311
62144134453
7400543416
oct130246641
947510376
1023154081
1112085005
127907429
134a48c52
14310a10d
152075706
hex1614da1

23154081 has 16 divisors (see below), whose sum is σ = 31764480. Its totient is φ = 14994000.

The previous prime is 23154071. The next prime is 23154083. The reversal of 23154081 is 18045132.

It is not a de Polignac number, because 23154081 - 210 = 23153057 is a prime.

It is a super-2 number, since 2×231540812 = 1072222933909122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23154083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30456 + ... + 31206.

It is an arithmetic number, because the mean of its divisors is an integer number (1985280).

Almost surely, 223154081 is an apocalyptic number.

It is an amenable number.

23154081 is a deficient number, since it is larger than the sum of its proper divisors (8610399).

23154081 is a wasteful number, since it uses less digits than its factorization.

23154081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 23154081 is about 4811.8687637965. The cubic root of 23154081 is about 285.0203371145.

The spelling of 23154081 in words is "twenty-three million, one hundred fifty-four thousand, eighty-one".

Divisors: 1 3 43 129 239 717 751 2253 10277 30831 32293 96879 179489 538467 7718027 23154081