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28062430 = 25111929463
BaseRepresentation
bin110101100001…
…1001011011110
31221210201102021
41223003023132
524140444210
62441250354
7460345444
oct153031336
957721367
1028062430
11149277a0
1294939ba
135a770b6
143a26b94
1526e4bda
hex1ac32de

28062430 has 64 divisors (see below), whose sum is σ = 60134400. Its totient is φ = 9313920.

The previous prime is 28062413. The next prime is 28062443. The reversal of 28062430 is 3426082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28062395 and 28062404.

It is a congruent 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, 60379 + ... + 60841.

It is an arithmetic number, because the mean of its divisors is an integer number (939600).

Almost surely, 228062430 is an apocalyptic number.

28062430 is an abundant number, since it is smaller than the sum of its proper divisors (32071970).

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

28062430 is a wasteful number, since it uses less digits than its factorization.

28062430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28062430 is about 5297.3984180917. The cubic root of 28062430 is about 303.8844132941.

The spelling of 28062430 in words is "twenty-eight million, sixty-two thousand, four hundred thirty".

Divisors: 1 2 5 10 11 19 22 29 38 55 58 95 110 145 190 209 290 319 418 463 551 638 926 1045 1102 1595 2090 2315 2755 3190 4630 5093 5510 6061 8797 10186 12122 13427 17594 25465 26854 30305 43985 50930 60610 67135 87970 96767 134270 147697 193534 255113 295394 483835 510226 738485 967670 1275565 1476970 2551130 2806243 5612486 14031215 28062430