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22831930 = 2511207563
BaseRepresentation
bin101011100011…
…0001100111010
31120221222112001
41113012030322
521321110210
62133211214
7365032252
oct127061472
946858461
1022831930
1111984a70
127790b0a
134965424
143064962
15201003a
hex15c633a

22831930 has 16 divisors (see below), whose sum is σ = 44833824. Its totient is φ = 8302480.

The previous prime is 22831843. The next prime is 22831931. The reversal of 22831930 is 3913822.

It is not an unprimeable number, because it can be changed into a prime (22831931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103672 + ... + 103891.

It is an arithmetic number, because the mean of its divisors is an integer number (2802114).

Almost surely, 222831930 is an apocalyptic number.

22831930 is a deficient number, since it is larger than the sum of its proper divisors (22001894).

22831930 is a wasteful number, since it uses less digits than its factorization.

22831930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207581.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 22831930 is about 4778.2768860751. The cubic root of 22831930 is about 283.6922955103.

The spelling of 22831930 in words is "twenty-two million, eight hundred thirty-one thousand, nine hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 207563 415126 1037815 2075630 2283193 4566386 11415965 22831930