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23190669 = 3217151573
BaseRepresentation
bin101100001110…
…1110010001101
31121122012121200
41120131302031
521414100134
62145020113
7401055165
oct130356215
947565550
1023190669
11120aa547
127924639
134a5c7b8
1431195a5
152081499
hex161dc8d

23190669 has 12 divisors (see below), whose sum is σ = 35468316. Its totient is φ = 14550912.

The previous prime is 23190667. The next prime is 23190677. The reversal of 23190669 is 96609132.

It can be written as a sum of positive squares in 2 ways, for example, as 14722569 + 8468100 = 3837^2 + 2910^2 .

It is not a de Polignac number, because 23190669 - 21 = 23190667 is a prime.

It is a super-2 number, since 2×231906692 = 1075614257335122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190667) 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 11 ways as a sum of consecutive naturals, for example, 75634 + ... + 75939.

It is an arithmetic number, because the mean of its divisors is an integer number (2955693).

Almost surely, 223190669 is an apocalyptic number.

It is an amenable number.

23190669 is a deficient number, since it is larger than the sum of its proper divisors (12277647).

23190669 is a wasteful number, since it uses less digits than its factorization.

23190669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151596 (or 151593 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 23190669 is about 4815.6691123872. The cubic root of 23190669 is about 285.1703874947.

The spelling of 23190669 in words is "twenty-three million, one hundred ninety thousand, six hundred sixty-nine".

Divisors: 1 3 9 17 51 153 151573 454719 1364157 2576741 7730223 23190669