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22838031 = 34437983
BaseRepresentation
bin101011100011…
…1101100001111
31120222021220000
41113013230033
521321304111
62133255343
7365056116
oct127075417
946867800
1022838031
1111989607
127794553
134968138
143066c7d
152011c56
hex15c7b0f

22838031 has 40 divisors (see below), whose sum is σ = 35777280. Its totient is φ = 14506128.

The previous prime is 22838027. The next prime is 22838033. The reversal of 22838031 is 13083822.

It is not a de Polignac number, because 22838031 - 22 = 22838027 is a prime.

It is a super-2 number, since 2×228380312 = 1043151319913922, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 22837986 and 22838004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22838033) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 275116 + ... + 275198.

It is an arithmetic number, because the mean of its divisors is an integer number (894432).

Almost surely, 222838031 is an apocalyptic number.

22838031 is a deficient number, since it is larger than the sum of its proper divisors (12939249).

22838031 is an equidigital number, since it uses as much as digits as its factorization.

22838031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 208 counting only the distinct ones).

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

The square root of 22838031 is about 4778.9152534859. The cubic root of 22838031 is about 283.7175620639.

The spelling of 22838031 in words is "twenty-two million, eight hundred thirty-eight thousand, thirty-one".

Divisors: 1 3 9 27 43 79 81 83 129 237 249 387 711 747 1161 2133 2241 3397 3483 3569 6399 6557 6723 10191 10707 19671 30573 32121 59013 91719 96363 177039 275157 281951 289089 531117 845853 2537559 7612677 22838031