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1230332320 = 25571098511
BaseRepresentation
bin100100101010101…
…0110000110100000
310011202002100122201
41021111112012200
510004431113240
6322030142544
742326436460
oct11125260640
93152070581
101230332320
11581543978
122a4051a54
13167b847b9
14b9587ba0
157302cd9a
hex495561a0

1230332320 has 48 divisors (see below), whose sum is σ = 3321900288. Its totient is φ = 421827840.

The previous prime is 1230332293. The next prime is 1230332321. The reversal of 1230332320 is 232330321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1230332321) 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, 548136 + ... + 550375.

It is an arithmetic number, because the mean of its divisors is an integer number (69206256).

Almost surely, 21230332320 is an apocalyptic number.

1230332320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230332320 is an abundant number, since it is smaller than the sum of its proper divisors (2091567968).

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

1230332320 is a wasteful number, since it uses less digits than its factorization.

1230332320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098533 (or 1098525 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 1230332320 is about 35076.0932830325. The cubic root of 1230332320 is about 1071.5377545961.

Adding to 1230332320 its reverse (232330321), we get a palindrome (1462662641).

The spelling of 1230332320 in words is "one billion, two hundred thirty million, three hundred thirty-two thousand, three hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 1098511 2197022 4394044 5492555 7689577 8788088 10985110 15379154 17576176 21970220 30758308 35152352 38447885 43940440 61516616 76895770 87880880 123033232 153791540 175761760 246066464 307583080 615166160 1230332320