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1230100032 = 2637915253
BaseRepresentation
bin100100101010001…
…1101011001000000
310011201122120000110
41021110131121000
510004401200112
6322021151320
742324451320
oct11124353100
93151576013
101230100032
115813a53a7
122a3b5b540
13167b02b55
14b9527280
1572ed413c
hex4951d640

1230100032 has 56 divisors (see below), whose sum is σ = 3719592256. Its totient is φ = 351456768.

The previous prime is 1230100031. The next prime is 1230100043. The reversal of 1230100032 is 2300010321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1230099990 and 1230100017.

It is not an unprimeable number, because it can be changed into a prime (1230100031) 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, 456283 + ... + 458970.

Almost surely, 21230100032 is an apocalyptic number.

1230100032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230100032 is an abundant number, since it is smaller than the sum of its proper divisors (2489492224).

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

1230100032 is an equidigital number, since it uses as much as digits as its factorization.

1230100032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915275 (or 915265 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1230100032 is about 35072.7819255901. The cubic root of 1230100032 is about 1071.4703145438.

Adding to 1230100032 its reverse (2300010321), we get a palindrome (3530110353).

The spelling of 1230100032 in words is "one billion, two hundred thirty million, one hundred thousand, thirty-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 168 192 224 336 448 672 1344 915253 1830506 2745759 3661012 5491518 6406771 7322024 10983036 12813542 14644048 19220313 21966072 25627084 29288096 38440626 43932144 51254168 58576192 76881252 87864288 102508336 153762504 175728576 205016672 307525008 410033344 615050016 1230100032