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22306830 = 2357138171
BaseRepresentation
bin101010100011…
…0000000001110
31112222022012220
41111012000032
521202304310
62114040210
7360414330
oct125060016
945868186
1022306830
11116564a7
127579066
134810410
142d69450
151e59670
hex154600e

22306830 has 64 divisors (see below), whose sum is σ = 65899008. Its totient is φ = 4705920.

The previous prime is 22306807. The next prime is 22306883. The reversal of 22306830 is 3860322.

It is a self number, because there is not a number n which added to its sum of digits gives 22306830.

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, 1356 + ... + 6815.

It is an arithmetic number, because the mean of its divisors is an integer number (1029672).

Almost surely, 222306830 is an apocalyptic number.

22306830 is an abundant number, since it is smaller than the sum of its proper divisors (43592178).

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

22306830 is a wasteful number, since it uses less digits than its factorization.

22306830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22306830 is about 4723.0106923444. The cubic root of 22306830 is about 281.5005747133.

The spelling of 22306830 in words is "twenty-two million, three hundred six thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 455 546 910 1365 2730 8171 16342 24513 40855 49026 57197 81710 106223 114394 122565 171591 212446 245130 285985 318669 343182 531115 571970 637338 743561 857955 1062230 1487122 1593345 1715910 2230683 3186690 3717805 4461366 7435610 11153415 22306830