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23230340 = 2257165931
BaseRepresentation
bin101100010011…
…1011110000100
31121201020000222
41120213132010
521421332330
62145523512
7401311640
oct130473604
947636028
1023230340
1112127331
127943598
134a74883
143129c20
15208d0e5
hex1627784

23230340 has 24 divisors (see below), whose sum is σ = 55753152. Its totient is φ = 7964640.

The previous prime is 23230321. The next prime is 23230349. The reversal of 23230340 is 4303232.

It is not an unprimeable number, because it can be changed into a prime (23230349) 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, 82826 + ... + 83105.

It is an arithmetic number, because the mean of its divisors is an integer number (2323048).

Almost surely, 223230340 is an apocalyptic number.

23230340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23230340 is an abundant number, since it is smaller than the sum of its proper divisors (32522812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23230340 is a wasteful number, since it uses less digits than its factorization.

23230340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165947 (or 165945 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 23230340 is about 4819.7863023167. The cubic root of 23230340 is about 285.3329032854.

Adding to 23230340 its reverse (4303232), we get a palindrome (27533572).

The spelling of 23230340 in words is "twenty-three million, two hundred thirty thousand, three hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 165931 331862 663724 829655 1161517 1659310 2323034 3318620 4646068 5807585 11615170 23230340