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23034220 = 22511104701
BaseRepresentation
bin101011111011…
…1100101101100
31121100021000021
41113313211230
521344043340
62141411524
7366534106
oct127674554
947307007
1023034220
1112002a50
127869ba4
134a06521
1430b8576
15204ee4a
hex15f796c

23034220 has 24 divisors (see below), whose sum is σ = 52769808. Its totient is φ = 8376000.

The previous prime is 23034203. The next prime is 23034223. The reversal of 23034220 is 2243032.

It is a junction number, because it is equal to n+sod(n) for n = 23034194 and 23034203.

It is not an unprimeable number, because it can be changed into a prime (23034223) 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, 52131 + ... + 52570.

It is an arithmetic number, because the mean of its divisors is an integer number (2198742).

Almost surely, 223034220 is an apocalyptic number.

23034220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23034220 is an abundant number, since it is smaller than the sum of its proper divisors (29735588).

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

23034220 is a wasteful number, since it uses less digits than its factorization.

23034220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104721 (or 104719 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23034220 is about 4799.3978789011. The cubic root of 23034220 is about 284.5276674116.

Adding to 23034220 its reverse (2243032), we get a palindrome (25277252).

The spelling of 23034220 in words is "twenty-three million, thirty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 104701 209402 418804 523505 1047010 1151711 2094020 2303422 4606844 5758555 11517110 23034220