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23193969 = 361126743
BaseRepresentation
bin101100001111…
…0100101110001
31121122101010220
41120132211301
521414201334
62145043253
7401100621
oct130364561
947571126
1023193969
1112101a77
127926529
134a61156
14311a881
152082449
hex161e971

23193969 has 8 divisors (see below), whose sum is σ = 31432512. Its totient is φ = 15209040.

The previous prime is 23193953. The next prime is 23193971. The reversal of 23193969 is 96939132.

It is a happy number.

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

It is not a de Polignac number, because 23193969 - 24 = 23193953 is a prime.

It is a super-2 number, since 2×231939692 = 1075920395945922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23193969.

It is not an unprimeable number, because it can be changed into a prime (23193979) 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, 63189 + ... + 63554.

It is an arithmetic number, because the mean of its divisors is an integer number (3929064).

Almost surely, 223193969 is an apocalyptic number.

It is an amenable number.

23193969 is a deficient number, since it is larger than the sum of its proper divisors (8238543).

23193969 is a wasteful number, since it uses less digits than its factorization.

23193969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126807.

The product of its digits is 78732, while the sum is 42.

The square root of 23193969 is about 4816.0117317133. The cubic root of 23193969 is about 285.1839133033.

The spelling of 23193969 in words is "twenty-three million, one hundred ninety-three thousand, nine hundred sixty-nine".

Divisors: 1 3 61 183 126743 380229 7731323 23193969