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23228970 = 23517371231
BaseRepresentation
bin101100010011…
…1001000101010
31121201011011020
41120213020222
521421311340
62145513310
7401304642
oct130471052
947634136
1023228970
11121262a6
127942836
134a7406b
143129522
15208c9d0
hex162722a

23228970 has 64 divisors (see below), whose sum is σ = 60673536. Its totient is φ = 5667840.

The previous prime is 23228969. The next prime is 23228977. The reversal of 23228970 is 7982232.

23228970 = 802 + 812 + ... + 4122.

It is not an unprimeable number, because it can be changed into a prime (23228977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18255 + ... + 19485.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 223228970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23228970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30336768).

23228970 is an abundant number, since it is smaller than the sum of its proper divisors (37444566).

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

23228970 is a wasteful number, since it uses less digits than its factorization.

23228970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 23228970 is about 4819.6441777376. The cubic root of 23228970 is about 285.3272940439.

The spelling of 23228970 in words is "twenty-three million, two hundred twenty-eight thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 17 30 34 37 51 74 85 102 111 170 185 222 255 370 510 555 629 1110 1231 1258 1887 2462 3145 3693 3774 6155 6290 7386 9435 12310 18465 18870 20927 36930 41854 45547 62781 91094 104635 125562 136641 209270 227735 273282 313905 455470 627810 683205 774299 1366410 1548598 2322897 3871495 4645794 7742990 11614485 23228970