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130722137 = 7131436507
BaseRepresentation
bin1111100101010…
…10100101011001
3100002222101001122
413302222211121
5231431102022
620545455025
73145056050
oct762524531
9302871048
10130722137
1167875527
1237941475
132110c3a0
141350b397
15b722742
hex7caa959

130722137 has 8 divisors (see below), whose sum is σ = 160888896. Its totient is φ = 103428432.

The previous prime is 130722103. The next prime is 130722139. The reversal of 130722137 is 731227031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130722137 - 214 = 130705753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130722139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718163 + ... + 718344.

It is an arithmetic number, because the mean of its divisors is an integer number (20111112).

Almost surely, 2130722137 is an apocalyptic number.

It is an amenable number.

130722137 is a deficient number, since it is larger than the sum of its proper divisors (30166759).

130722137 is a wasteful number, since it uses less digits than its factorization.

130722137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436527.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 130722137 is about 11433.3781971909. The cubic root of 130722137 is about 507.5159702805.

Adding to 130722137 its reverse (731227031), we get a palindrome (861949168).

The spelling of 130722137 in words is "one hundred thirty million, seven hundred twenty-two thousand, one hundred thirty-seven".

Divisors: 1 7 13 91 1436507 10055549 18674591 130722137