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230001040 = 2452875013
BaseRepresentation
bin11011011010110…
…00100110010000
3121000210021010001
431231120212100
5432340013130
634453415344
75461655653
oct1555304620
9530707101
10230001040
11108914205
126503a554
133885c8b9
142279189a
15152d36ca
hexdb58990

230001040 has 20 divisors (see below), whose sum is σ = 534752604. Its totient is φ = 92000384.

The previous prime is 230001011. The next prime is 230001043. The reversal of 230001040 is 40100032.

It can be written as a sum of positive squares in 2 ways, for example, as 59228416 + 170772624 = 7696^2 + 13068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (230001043) 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 3 ways as a sum of consecutive naturals, for example, 1437427 + ... + 1437586.

Almost surely, 2230001040 is an apocalyptic number.

230001040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230001040 is an abundant number, since it is smaller than the sum of its proper divisors (304751564).

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

230001040 is a wasteful number, since it uses less digits than its factorization.

230001040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875026 (or 2875020 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 230001040 is about 15165.7851758490. The cubic root of 230001040 is about 612.6934910001.

Adding to 230001040 its reverse (40100032), we get a palindrome (270101072).

The spelling of 230001040 in words is "two hundred thirty million, one thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2875013 5750026 11500052 14375065 23000104 28750130 46000208 57500260 115000520 230001040