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234440420 = 22514877883
BaseRepresentation
bin11011111100101…
…00011011100100
3121100010210210112
431332110123210
5440004043140
635132512152
75544465524
oct1576243344
9540123715
10234440420
11110376615
126661b658
1339755456
14231c9684
15158adc65
hexdf946e4

234440420 has 24 divisors (see below), whose sum is σ = 492718464. Its totient is φ = 93701216.

The previous prime is 234440413. The next prime is 234440461. The reversal of 234440420 is 24044432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25799 + ... + 33681.

It is an arithmetic number, because the mean of its divisors is an integer number (20529936).

Almost surely, 2234440420 is an apocalyptic number.

234440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234440420 is an abundant number, since it is smaller than the sum of its proper divisors (258278044).

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

234440420 is a wasteful number, since it uses less digits than its factorization.

234440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9379 (or 9377 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 234440420 is about 15311.4473515733. The cubic root of 234440420 is about 616.6103784350.

Adding to 234440420 its reverse (24044432), we get a palindrome (258484852).

The spelling of 234440420 in words is "two hundred thirty-four million, four hundred forty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1487 2974 5948 7435 7883 14870 15766 29740 31532 39415 78830 157660 11722021 23444042 46888084 58610105 117220210 234440420