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1230668441 = 7191711639
BaseRepresentation
bin100100101011010…
…1000001010011001
310011202201102201122
41021112220022121
510010022342231
6322041255025
742332336432
oct11126501231
93152642648
101230668441
11581753462
122a4194475
13167c717a2
14b9634489
157309777b
hex495a8299

1230668441 has 4 divisors (see below), whose sum is σ = 1232380800. Its totient is φ = 1228956084.

The previous prime is 1230668431. The next prime is 1230668449. The reversal of 1230668441 is 1448660321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1448660321 = 1785215313.

It is a cyclic number.

It is not a de Polignac number, because 1230668441 - 26 = 1230668377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230668449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855101 + ... + 856538.

It is an arithmetic number, because the mean of its divisors is an integer number (308095200).

Almost surely, 21230668441 is an apocalyptic number.

It is an amenable number.

1230668441 is a deficient number, since it is larger than the sum of its proper divisors (1712359).

1230668441 is an equidigital number, since it uses as much as digits as its factorization.

1230668441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712358.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1230668441 is about 35080.8842676464. The cubic root of 1230668441 is about 1071.6353254021.

The spelling of 1230668441 in words is "one billion, two hundred thirty million, six hundred sixty-eight thousand, four hundred forty-one".

Divisors: 1 719 1711639 1230668441