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122331808 = 253822869
BaseRepresentation
bin1110100101010…
…10001010100000
322112012002200201
413102222022200
5222304104213
620045554544
73013542334
oct722521240
9275162621
10122331808
1163064775
1234b75a54
131c4623b1
14123657c4
15ab166dd
hex74aa2a0

122331808 has 12 divisors (see below), whose sum is σ = 240840810. Its totient is φ = 61165888.

The previous prime is 122331767. The next prime is 122331809. The reversal of 122331808 is 808133221.

It can be written as a sum of positive squares in only one way, i.e., 80496784 + 41835024 = 8972^2 + 6468^2 .

It is not an unprimeable number, because it can be changed into a prime (122331809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1911403 + ... + 1911466.

Almost surely, 2122331808 is an apocalyptic number.

It is an amenable number.

122331808 is a deficient number, since it is larger than the sum of its proper divisors (118509002).

122331808 is an equidigital number, since it uses as much as digits as its factorization.

122331808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822879 (or 3822871 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 122331808 is about 11060.3710606833. The cubic root of 122331808 is about 496.4167932672.

It can be divided in two parts, 12233 and 1808, that added together give a palindrome (14041).

The spelling of 122331808 in words is "one hundred twenty-two million, three hundred thirty-one thousand, eight hundred eight".

Divisors: 1 2 4 8 16 32 3822869 7645738 15291476 30582952 61165904 122331808