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130662442 = 21710935257
BaseRepresentation
bin1111100100111…
…00000000101010
3100002212100011201
413302130000222
5231422144232
620544314414
73144420031
oct762340052
9302770151
10130662442
1167834699
1237912a0a
13210bb171
14134d3718
15b70ebe7
hex7c9c02a

130662442 has 16 divisors (see below), whose sum is σ = 209432520. Its totient is φ = 60922368.

The previous prime is 130662431. The next prime is 130662443. The reversal of 130662442 is 244266031.

It can be written as a sum of positive squares in 4 ways, for example, as 103612041 + 27050401 = 10179^2 + 5201^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130662442.

It is not an unprimeable number, because it can be changed into a prime (130662443) 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, 13923 + ... + 21334.

Almost surely, 2130662442 is an apocalyptic number.

130662442 is a deficient number, since it is larger than the sum of its proper divisors (78770078).

130662442 is a wasteful number, since it uses less digits than its factorization.

130662442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35385.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 130662442 is about 11430.7673408219. The cubic root of 130662442 is about 507.4387051762.

The spelling of 130662442 in words is "one hundred thirty million, six hundred sixty-two thousand, four hundred forty-two".

Divisors: 1 2 17 34 109 218 1853 3706 35257 70514 599369 1198738 3843013 7686026 65331221 130662442