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23155069 = 74916737
BaseRepresentation
bin101100001010…
…1000101111101
31121120101210011
41120111011331
521411430234
62144143221
7400546330
oct130250575
947511704
1023155069
1112085823
127907b11
134a49532
14310a617
152075b64
hex161517d

23155069 has 8 divisors (see below), whose sum is σ = 26520768. Its totient is φ = 19803840.

The previous prime is 23155063. The next prime is 23155123. The reversal of 23155069 is 96055132.

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

It is not a de Polignac number, because 23155069 - 23 = 23155061 is a prime.

It is a super-2 number, since 2×231550692 = 1072314440789522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23155069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155061) 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 7 ways as a sum of consecutive naturals, for example, 69 + ... + 6805.

It is an arithmetic number, because the mean of its divisors is an integer number (3315096).

Almost surely, 223155069 is an apocalyptic number.

It is an amenable number.

23155069 is a deficient number, since it is larger than the sum of its proper divisors (3365699).

23155069 is an equidigital number, since it uses as much as digits as its factorization.

23155069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 23155069 is about 4811.9714255178. The cubic root of 23155069 is about 285.0243910591.

The spelling of 23155069 in words is "twenty-three million, one hundred fifty-five thousand, sixty-nine".

Divisors: 1 7 491 3437 6737 47159 3307867 23155069