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15130428 = 22347139193
BaseRepresentation
bin111001101101…
…111100111100
31001110201001020
4321231330330
512333133203
61300144140
7242415015
oct71557474
931421036
1015130428
1185a4795
125098050
133199b21
14201c00c
1514dd153
hexe6df3c

15130428 has 48 divisors (see below), whose sum is σ = 36503040. Its totient is φ = 4875264.

The previous prime is 15130421. The next prime is 15130429. The reversal of 15130428 is 82403151.

It is a junction number, because it is equal to n+sod(n) for n = 15130398 and 15130407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15130421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78300 + ... + 78492.

It is an arithmetic number, because the mean of its divisors is an integer number (760480).

Almost surely, 215130428 is an apocalyptic number.

It is an amenable number.

15130428 is an abundant number, since it is smaller than the sum of its proper divisors (21372612).

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

15130428 is a wasteful number, since it uses less digits than its factorization.

15130428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 15130428 is about 3889.7850840374. The cubic root of 15130428 is about 247.3339524948. Note that the first 3 decimals are identical.

Adding to 15130428 its reverse (82403151), we get a palindrome (97533579).

The spelling of 15130428 in words is "fifteen million, one hundred thirty thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 47 94 139 141 188 193 278 282 386 417 556 564 579 772 834 1158 1668 2316 6533 9071 13066 18142 19599 26132 26827 27213 36284 39198 53654 54426 78396 80481 107308 108852 160962 321924 1260869 2521738 3782607 5043476 7565214 15130428