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1230302992 = 24539714957
BaseRepresentation
bin100100101010100…
…1110111100010000
310011202000212102111
41021111032330100
510004424143432
6322025355104
742326255122
oct11125167420
93152025374
101230302992
11581523936
122a4038a94
13167b74349
14b957b212
1573024347
hex4954ef10

1230302992 has 40 divisors (see below), whose sum is σ = 2453889816. Its totient is φ = 597282816.

The previous prime is 1230302951. The next prime is 1230302993. The reversal of 1230302992 is 2992030321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 146313216 + 1083989776 = 12096^2 + 32924^2 .

It is not an unprimeable number, because it can be changed into a prime (1230302993) 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, 74778 + ... + 89734.

Almost surely, 21230302992 is an apocalyptic number.

It is an amenable number.

1230302992 is a deficient number, since it is larger than the sum of its proper divisors (1223586824).

1230302992 is a wasteful number, since it uses less digits than its factorization.

1230302992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15115 (or 15109 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1230302992 is about 35075.6752180197. The cubic root of 1230302992 is about 1071.5292402816.

The spelling of 1230302992 in words is "one billion, two hundred thirty million, three hundred two thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 53 97 106 194 212 388 424 776 848 1552 5141 10282 14957 20564 29914 41128 59828 82256 119656 239312 792721 1450829 1585442 2901658 3170884 5803316 6341768 11606632 12683536 23213264 76893937 153787874 307575748 615151496 1230302992