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1230990230 = 251733721487
BaseRepresentation
bin100100101011111…
…0110101110010110
310011210022210010202
41021113312232112
510010113141410
6322052220502
742335146541
oct11127665626
93153283122
101230990230
115819531a8
122a430a732
131680550b2
14b96b9858
157310cca5
hex495f6b96

1230990230 has 32 divisors (see below), whose sum is σ = 2353193856. Its totient is φ = 462034944.

The previous prime is 1230990209. The next prime is 1230990269. The reversal of 1230990230 is 320990321.

It is a junction number, because it is equal to n+sod(n) for n = 1230990193 and 1230990202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46547 + ... + 68033.

It is an arithmetic number, because the mean of its divisors is an integer number (73537308).

Almost surely, 21230990230 is an apocalyptic number.

1230990230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230990230 is a deficient number, since it is larger than the sum of its proper divisors (1122203626).

1230990230 is a wasteful number, since it uses less digits than its factorization.

1230990230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21848.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1230990230 is about 35085.4703545499. The cubic root of 1230990230 is about 1071.7287192025.

Subtracting from 1230990230 its reverse (320990321), we obtain a palindrome (909999909).

The spelling of 1230990230 in words is "one billion, two hundred thirty million, nine hundred ninety thousand, two hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 337 674 1685 3370 5729 11458 21487 28645 42974 57290 107435 214870 365279 730558 1826395 3652790 7241119 14482238 36205595 72411190 123099023 246198046 615495115 1230990230