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10231690 = 257319157
BaseRepresentation
bin100111000001…
…111110001010
3201020211020111
4213001332022
510104403230
61003144534
7152653000
oct47017612
921224214
1010231690
115859247
12351514a
132173171
141504a70
15d7192a
hex9c1f8a

10231690 has 64 divisors (see below), whose sum is σ = 22752000. Its totient is φ = 3302208.

The previous prime is 10231687. The next prime is 10231691. The reversal of 10231690 is 9613201.

10231690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×102316902 = 209374960512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10231691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65092 + ... + 65248.

It is an arithmetic number, because the mean of its divisors is an integer number (355500).

Almost surely, 210231690 is an apocalyptic number.

10231690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10231690 is an abundant number, since it is smaller than the sum of its proper divisors (12520310).

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

10231690 is a wasteful number, since it uses less digits than its factorization.

10231690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 10231690 is about 3198.7012989649. The cubic root of 10231690 is about 217.0946517366.

Adding to 10231690 its reverse (9613201), we get a palindrome (19844891).

It can be divided in two parts, 1023 and 1690, that multiplied together give a triangular number (1728870 = T1859).

The spelling of 10231690 in words is "ten million, two hundred thirty-one thousand, six hundred ninety".

Divisors: 1 2 5 7 10 14 19 35 38 49 70 95 98 133 157 190 245 266 314 343 490 665 686 785 931 1099 1330 1570 1715 1862 2198 2983 3430 4655 5495 5966 6517 7693 9310 10990 13034 14915 15386 20881 29830 32585 38465 41762 53851 65170 76930 104405 107702 146167 208810 269255 292334 538510 730835 1023169 1461670 2046338 5115845 10231690