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1230370860 = 223520506181
BaseRepresentation
bin100100101010101…
…1111100000101100
310011202011022112010
41021111133200230
510004433331420
6322031041220
742326660025
oct11125374054
93152138463
101230370860
1158156a924
122a4070210
13167b991c4
14b9597c4c
15730394e0
hex4955f82c

1230370860 has 24 divisors (see below), whose sum is σ = 3445038576. Its totient is φ = 328098880.

The previous prime is 1230370853. The next prime is 1230370861. The reversal of 1230370860 is 680730321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1230370861) 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, 10253031 + ... + 10253150.

It is an arithmetic number, because the mean of its divisors is an integer number (143543274).

Almost surely, 21230370860 is an apocalyptic number.

1230370860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230370860 is an abundant number, since it is smaller than the sum of its proper divisors (2214667716).

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

1230370860 is a wasteful number, since it uses less digits than its factorization.

1230370860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20506193 (or 20506191 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1230370860 is about 35076.6426557617. The cubic root of 1230370860 is about 1071.5489430729.

The spelling of 1230370860 in words is "one billion, two hundred thirty million, three hundred seventy thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 20506181 41012362 61518543 82024724 102530905 123037086 205061810 246074172 307592715 410123620 615185430 1230370860