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22831038 = 233422797
BaseRepresentation
bin101011100010…
…1111110111110
31120221221022000
41113011332332
521321043123
62133203130
7365026536
oct127057676
946857260
1022831038
111198432a
1277904a6
134964bb9
1430644c6
15200eb43
hex15c5fbe

22831038 has 16 divisors (see below), whose sum is σ = 50735760. Its totient is φ = 7610328.

The previous prime is 22831037. The next prime is 22831057. The reversal of 22831038 is 83013822.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22831037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211345 + ... + 211452.

It is an arithmetic number, because the mean of its divisors is an integer number (3170985).

Almost surely, 222831038 is an apocalyptic number.

22831038 is an abundant number, since it is smaller than the sum of its proper divisors (27904722).

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

22831038 is a wasteful number, since it uses less digits than its factorization.

22831038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422808 (or 422802 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22831038 is about 4778.1835460769. The cubic root of 22831038 is about 283.6886010230.

It can be divided in two parts, 2283 and 1038, that added together give a triangular number (3321 = T81).

The spelling of 22831038 in words is "twenty-two million, eight hundred thirty-one thousand, thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 422797 845594 1268391 2536782 3805173 7610346 11415519 22831038