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15130028 = 223782507
BaseRepresentation
bin111001101101…
…110110101100
31001110200111102
4321231312230
512333130103
61300142232
7242413604
oct71556654
931420442
1015130028
1185a4461
125097978
1331998a4
14201bc04
1514dce88
hexe6ddac

15130028 has 6 divisors (see below), whose sum is σ = 26477556. Its totient is φ = 7565012.

The previous prime is 15130009. The next prime is 15130039. The reversal of 15130028 is 82003151.

It is a junction number, because it is equal to n+sod(n) for n = 15129991 and 15130009.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1891250 + ... + 1891257.

It is an arithmetic number, because the mean of its divisors is an integer number (4412926).

Almost surely, 215130028 is an apocalyptic number.

It is an amenable number.

15130028 is a deficient number, since it is larger than the sum of its proper divisors (11347528).

15130028 is a wasteful number, since it uses less digits than its factorization.

15130028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782511 (or 3782509 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 15130028 is about 3889.7336669752. The cubic root of 15130028 is about 247.3317729034.

Adding to 15130028 its reverse (82003151), we get a palindrome (97133179).

The spelling of 15130028 in words is "fifteen million, one hundred thirty thousand, twenty-eight".

Divisors: 1 2 4 3782507 7565014 15130028