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130020454 = 2177153861
BaseRepresentation
bin1111011111111…
…11010001100110
3100001122201112101
413233333101212
5231241123304
620522442314
73136104244
oct757772146
9301581471
10130020454
1167436323
123766339a
1320c24ba5
14133a7794
15b6348a4
hex7bff466

130020454 has 16 divisors (see below), whose sum is σ = 209415456. Its totient is φ = 60323200.

The previous prime is 130020421. The next prime is 130020467. The reversal of 130020454 is 454020031.

It is a super-2 number, since 2×1300204542 = 33810636916732232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24517 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (13088466).

Almost surely, 2130020454 is an apocalyptic number.

130020454 is a deficient number, since it is larger than the sum of its proper divisors (79395002).

130020454 is a wasteful number, since it uses less digits than its factorization.

130020454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53951.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 130020454 is about 11402.6511829486. The cubic root of 130020454 is about 506.6062686738.

Adding to 130020454 its reverse (454020031), we get a palindrome (584040485).

The spelling of 130020454 in words is "one hundred thirty million, twenty thousand, four hundred fifty-four".

Divisors: 1 2 17 34 71 142 1207 2414 53861 107722 915637 1831274 3824131 7648262 65010227 130020454