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130788628 = 221931431291
BaseRepresentation
bin1111100101110…
…10110100010100
3100010002202021021
413302322310110
5231440214003
620551130524
73145453645
oct762726424
9303082237
10130788628
1167910483
1237973a44
1321133729
14135276cc
15b7372bd
hex7cbad14

130788628 has 48 divisors (see below), whose sum is σ = 254679040. Its totient is φ = 58514400.

The previous prime is 130788617. The next prime is 130788631. The reversal of 130788628 is 826887031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100663 + ... + 101953.

Almost surely, 2130788628 is an apocalyptic number.

It is an amenable number.

130788628 is a deficient number, since it is larger than the sum of its proper divisors (123890412).

130788628 is a wasteful number, since it uses less digits than its factorization.

130788628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 130788628 is about 11436.2855858010. The cubic root of 130788628 is about 507.6020039734.

The spelling of 130788628 in words is "one hundred thirty million, seven hundred eighty-eight thousand, six hundred twenty-eight".

Divisors: 1 2 4 19 31 38 43 62 76 86 124 172 589 817 1178 1291 1333 1634 2356 2582 2666 3268 5164 5332 24529 25327 40021 49058 50654 55513 80042 98116 101308 111026 160084 222052 760399 1054747 1520798 1720903 2109494 3041596 3441806 4218988 6883612 32697157 65394314 130788628