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1288225083 = 3429408361
BaseRepresentation
bin100110011001000…
…1100000100111011
310022210000121121010
41030302030010323
510114241200313
6331455045003
743631506155
oct11462140473
93283017533
101288225083
11601195632
122bb510763
13176b74582
14c3137ad5
15781664c3
hex4cc8c13b

1288225083 has 4 divisors (see below), whose sum is σ = 1717633448. Its totient is φ = 858816720.

The previous prime is 1288225067. The next prime is 1288225091. The reversal of 1288225083 is 3805228821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3805228821 = 31268409607.

It is not a de Polignac number, because 1288225083 - 24 = 1288225067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288225033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214704178 + ... + 214704183.

It is an arithmetic number, because the mean of its divisors is an integer number (429408362).

Almost surely, 21288225083 is an apocalyptic number.

1288225083 is a deficient number, since it is larger than the sum of its proper divisors (429408365).

1288225083 is an equidigital number, since it uses as much as digits as its factorization.

1288225083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429408364.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 1288225083 is about 35891.8525991624. The cubic root of 1288225083 is about 1088.0877402186.

The spelling of 1288225083 in words is "one billion, two hundred eighty-eight million, two hundred twenty-five thousand, eighty-three".

Divisors: 1 3 429408361 1288225083