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230304444 = 22391121067
BaseRepresentation
bin11011011101000…
…10101010111100
3121001100200022020
431232202222330
5432424220234
634504120140
75464361346
oct1556425274
9531320266
10230304444
11109001157
1265166050
1338937a26
1422830296
1515343549
hexdba2abc

230304444 has 24 divisors (see below), whose sum is σ = 537992448. Its totient is φ = 76680240.

The previous prime is 230304433. The next prime is 230304449. The reversal of 230304444 is 444403032.

It is a happy number.

It is a super-3 number, since 3×2303044443 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230304449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (22416352).

Almost surely, 2230304444 is an apocalyptic number.

It is an amenable number.

230304444 is an abundant number, since it is smaller than the sum of its proper divisors (307688004).

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

230304444 is a wasteful number, since it uses less digits than its factorization.

230304444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21985 (or 21983 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 230304444 is about 15175.7847902506. The cubic root of 230304444 is about 612.9627825009.

Adding to 230304444 its reverse (444403032), we get a palindrome (674707476).

The spelling of 230304444 in words is "two hundred thirty million, three hundred four thousand, four hundred forty-four".

Divisors: 1 2 3 4 6 12 911 1822 2733 3644 5466 10932 21067 42134 63201 84268 126402 252804 19192037 38384074 57576111 76768148 115152222 230304444