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22830228 = 22331371543
BaseRepresentation
bin101011100010…
…1110010010100
31120221220012000
41113011302110
521321031403
62133155300
7365024301
oct127056224
946856160
1022830228
1111983763
12778bb30
134964715
1430640a8
15200e7a3
hex15c5c94

22830228 has 48 divisors (see below), whose sum is σ = 59660160. Its totient is φ = 7549632.

The previous prime is 22830217. The next prime is 22830233. The reversal of 22830228 is 82203822.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14025 + ... + 15567.

It is an arithmetic number, because the mean of its divisors is an integer number (1242920).

Almost surely, 222830228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22830228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29830080).

22830228 is an abundant number, since it is smaller than the sum of its proper divisors (36829932).

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

22830228 is a wasteful number, since it uses less digits than its factorization.

22830228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 22830228 is about 4778.0987850818. The cubic root of 22830228 is about 283.6852460801.

The spelling of 22830228 in words is "twenty-two million, eight hundred thirty thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 137 274 411 548 822 1233 1543 1644 2466 3086 3699 4629 4932 6172 7398 9258 13887 14796 18516 27774 41661 55548 83322 166644 211391 422782 634173 845564 1268346 1902519 2536692 3805038 5707557 7610076 11415114 22830228