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23360420 = 2257116451
BaseRepresentation
bin101100100011…
…1001110100100
31121221211110202
41121013032210
521440013140
62152410032
7402363116
oct131071644
947854422
1023360420
1112206036
1279a6918
134abbb45
1431613b6
1520b6915
hex16473a4

23360420 has 24 divisors (see below), whose sum is σ = 49750848. Its totient is φ = 9212000.

The previous prime is 23360419. The next prime is 23360429. The reversal of 23360420 is 2406332.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23360392 and 23360401.

It is not an unprimeable number, because it can be changed into a prime (23360429) 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, 6806 + ... + 9645.

It is an arithmetic number, because the mean of its divisors is an integer number (2072952).

Almost surely, 223360420 is an apocalyptic number.

23360420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23360420 is an abundant number, since it is smaller than the sum of its proper divisors (26390428).

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

23360420 is a wasteful number, since it uses less digits than its factorization.

23360420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16531 (or 16529 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 23360420 is about 4833.2618385517. The cubic root of 23360420 is about 285.8644931610.

Adding to 23360420 its reverse (2406332), we get a palindrome (25766752).

The spelling of 23360420 in words is "twenty-three million, three hundred sixty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 16451 32902 65804 82255 164510 329020 1168021 2336042 4672084 5840105 11680210 23360420