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1230230320 = 245111397989
BaseRepresentation
bin100100101010011…
…1101001100110000
310011201220011201221
41021110331030300
510004414332240
6322024034424
742325533214
oct11124751460
93151804657
101230230320
11581484280
122a4002a14
13167b4a247
14b955c944
157300ca4a
hex4953d330

1230230320 has 40 divisors (see below), whose sum is σ = 3120313680. Its totient is φ = 447356160.

The previous prime is 1230230303. The next prime is 1230230341. The reversal of 1230230320 is 230320321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1230230294 and 1230230303.

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, 698115 + ... + 699874.

It is an arithmetic number, because the mean of its divisors is an integer number (78007842).

Almost surely, 21230230320 is an apocalyptic number.

1230230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230230320 is an abundant number, since it is smaller than the sum of its proper divisors (1890083360).

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

1230230320 is a wasteful number, since it uses less digits than its factorization.

1230230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398013 (or 1398007 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1230230320 is about 35074.6392711315. The cubic root of 1230230320 is about 1071.5081420354.

Adding to 1230230320 its reverse (230320321), we get a palindrome (1460550641).

Subtracting from 1230230320 its reverse (230320321), we obtain a palindrome (999909999).

The spelling of 1230230320 in words is "one billion, two hundred thirty million, two hundred thirty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 1397989 2795978 5591956 6989945 11183912 13979890 15377879 22367824 27959780 30755758 55919560 61511516 76889395 111839120 123023032 153778790 246046064 307557580 615115160 1230230320