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130390049 = 1494491949
BaseRepresentation
bin1111100010110…
…01100000100001
3100002100111112002
413301121200201
5231334440144
620534413345
73142203626
oct761314041
9302314462
10130390049
1167668a79
1237801255
132102419a
141346234d
15b6a914e
hex7c59821

130390049 has 8 divisors (see below), whose sum is σ = 131625000. Its totient is φ = 129160192.

The previous prime is 130390033. The next prime is 130390067. The reversal of 130390049 is 940093031.

It can be written as a sum of positive squares in 4 ways, for example, as 19298449 + 111091600 = 4393^2 + 10540^2 .

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 130390049 - 24 = 130390033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130398049) 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, 65927 + ... + 67875.

It is an arithmetic number, because the mean of its divisors is an integer number (16453125).

Almost surely, 2130390049 is an apocalyptic number.

It is an amenable number.

130390049 is a deficient number, since it is larger than the sum of its proper divisors (1234951).

130390049 is a wasteful number, since it uses less digits than its factorization.

130390049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 130390049 is about 11418.8462201748. The cubic root of 130390049 is about 507.0858393951.

The spelling of 130390049 in words is "one hundred thirty million, three hundred ninety thousand, forty-nine".

Divisors: 1 149 449 1949 66901 290401 875101 130390049