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387790130 = 257131313253
BaseRepresentation
bin10111000111010…
…011010100110010
31000000200210001102
4113013103110302
51243233241010
6102251404402
712416106320
oct2707232462
91000623042
10387790130
11189996512
12a9a53702
1362457c20
1439706d10
15240a0ba5
hex171d3532

387790130 has 64 divisors (see below), whose sum is σ = 865928448. Its totient is φ = 121754880.

The previous prime is 387790121. The next prime is 387790141. The reversal of 387790130 is 31097783.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117584 + ... + 120836.

It is an arithmetic number, because the mean of its divisors is an integer number (13530132).

Almost surely, 2387790130 is an apocalyptic number.

387790130 is an abundant number, since it is smaller than the sum of its proper divisors (478138318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387790130 is a wasteful number, since it uses less digits than its factorization.

387790130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 387790130 is about 19692.3876155229. The cubic root of 387790130 is about 729.2317745545.

The spelling of 387790130 in words is "three hundred eighty-seven million, seven hundred ninety thousand, one hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 131 182 262 455 655 910 917 1310 1703 1834 3253 3406 4585 6506 8515 9170 11921 16265 17030 22771 23842 32530 42289 45542 59605 84578 113855 119210 211445 227710 296023 422890 426143 592046 852286 1480115 2130715 2960230 2983001 4261430 5539859 5966002 11079718 14915005 27699295 29830010 38779013 55398590 77558026 193895065 387790130