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130851028 = 22711424841
BaseRepresentation
bin1111100110010…
…10000011010100
3100010012220212101
413303022003110
5231444213103
620552331444
73146133610
oct763120324
9303186771
10130851028
1167953350
12379a3b84
1321155c59
1413542340
15b74aa1d
hex7cca0d4

130851028 has 24 divisors (see below), whose sum is σ = 285493824. Its totient is φ = 50980800.

The previous prime is 130851001. The next prime is 130851037. The reversal of 130851028 is 820158031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 130850987 and 130851005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212113 + ... + 212728.

It is an arithmetic number, because the mean of its divisors is an integer number (11895576).

Almost surely, 2130851028 is an apocalyptic number.

It is an amenable number.

130851028 is an abundant number, since it is smaller than the sum of its proper divisors (154642796).

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

130851028 is a wasteful number, since it uses less digits than its factorization.

130851028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424863 (or 424861 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 130851028 is about 11439.0134189973. The cubic root of 130851028 is about 507.6827177417.

It can be divided in two parts, 130 and 851028, that added together give a palindrome (851158).

The spelling of 130851028 in words is "one hundred thirty million, eight hundred fifty-one thousand, twenty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 424841 849682 1699364 2973887 4673251 5947774 9346502 11895548 18693004 32712757 65425514 130851028