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230222140 = 22537311111
BaseRepresentation
bin11011011100011…
…10100100111100
3121001012111101221
431232032210330
5432414102030
634502243124
75463566401
oct1556164474
9531174357
10230222140
11108a55335
12651264a4
1338909425
142280c2a8
1515328e7a
hexdb8e93c

230222140 has 24 divisors (see below), whose sum is σ = 496534752. Its totient is φ = 89599680.

The previous prime is 230222119. The next prime is 230222149. The reversal of 230222140 is 41222032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230222149) 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, 154816 + ... + 156295.

It is an arithmetic number, because the mean of its divisors is an integer number (20688948).

Almost surely, 2230222140 is an apocalyptic number.

230222140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230222140 is an abundant number, since it is smaller than the sum of its proper divisors (266312612).

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

230222140 is a wasteful number, since it uses less digits than its factorization.

230222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311157 (or 311155 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 230222140 is about 15173.0728595100. The cubic root of 230222140 is about 612.8897555417.

Adding to 230222140 its reverse (41222032), we get a palindrome (271444172).

It can be divided in two parts, 2302 and 22140, that added together give a palindrome (24442).

The spelling of 230222140 in words is "two hundred thirty million, two hundred twenty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 740 311111 622222 1244444 1555555 3111110 6222220 11511107 23022214 46044428 57555535 115111070 230222140