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1230540417 = 3443477517
BaseRepresentation
bin100100101011000…
…1000111010000001
310011202110221010000
41021112020322001
510010004243132
6322034430213
742331264251
oct11126107201
93152427100
101230540417
11581676257
122a4132369
13167c28432
14b95dd961
157306e87c
hex49588e81

1230540417 has 40 divisors (see below), whose sum is σ = 1921239936. Its totient is φ = 784129248.

The previous prime is 1230540371. The next prime is 1230540497. The reversal of 1230540417 is 7140450321.

It is not a de Polignac number, because 1230540417 - 28 = 1230540161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1230540497) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159943 + ... + 167459.

Almost surely, 21230540417 is an apocalyptic number.

It is an amenable number.

1230540417 is a deficient number, since it is larger than the sum of its proper divisors (690699519).

1230540417 is an equidigital number, since it uses as much as digits as its factorization.

1230540417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7619 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1230540417 is about 35079.0595227409. The cubic root of 1230540417 is about 1071.5981640801.

Adding to 1230540417 its reverse (7140450321), we get a palindrome (8370990738).

The spelling of 1230540417 in words is "one billion, two hundred thirty million, five hundred forty thousand, four hundred seventeen".

Divisors: 1 3 9 27 43 47 81 129 141 387 423 1161 1269 2021 3483 3807 6063 7517 18189 22551 54567 67653 163701 202959 323231 353299 608877 969693 1059897 2909079 3179691 8727237 9539073 15191857 26181711 28617219 45575571 136726713 410180139 1230540417