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1340022257 = 7288330971
BaseRepresentation
bin100111111011111…
…0001110111110001
310110101111011221222
41033313301313301
510221021203012
6340545154425
745131000300
oct11767616761
93411434858
101340022257
11628453612
1231492ba15
1318480b9a2
14c9d7c437
157c998972
hex4fdf1df1

1340022257 has 12 divisors (see below), whose sum is σ = 1560617136. Its totient is φ = 1147252680.

The previous prime is 1340022239. The next prime is 1340022259. The reversal of 1340022257 is 7522200431.

It is not a de Polignac number, because 1340022257 - 28 = 1340022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340022259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27782 + ... + 58752.

It is an arithmetic number, because the mean of its divisors is an integer number (130051428).

Almost surely, 21340022257 is an apocalyptic number.

It is an amenable number.

1340022257 is a deficient number, since it is larger than the sum of its proper divisors (220594879).

1340022257 is an equidigital number, since it uses as much as digits as its factorization.

1340022257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31868 (or 31861 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1340022257 is about 36606.3144416370. The cubic root of 1340022257 is about 1102.4798753360.

Adding to 1340022257 its reverse (7522200431), we get a palindrome (8862222688).

The spelling of 1340022257 in words is "one billion, three hundred forty million, twenty-two thousand, two hundred fifty-seven".

Divisors: 1 7 49 883 6181 30971 43267 216797 1517579 27347393 191431751 1340022257