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224140 = 22571601
BaseRepresentation
bin110110101110001100
3102101110111
4312232030
524133030
64445404
71622320
oct665614
9371414
10224140
11143444
12a9864
137b037
145b980
154662a
hex36b8c

224140 has 24 divisors (see below), whose sum is σ = 538272. Its totient is φ = 76800.

The previous prime is 224131. The next prime is 224149. The reversal of 224140 is 41422.

224140 = T60 + T61 + ... + T115.

It is an interprime number because it is at equal distance from previous prime (224131) and next prime (224149).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 224140.

It is not an unprimeable number, because it can be changed into a prime (224149) 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, 661 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (22428).

2224140 is an apocalyptic number.

224140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224140 is an abundant number, since it is smaller than the sum of its proper divisors (314132).

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

224140 is a wasteful number, since it uses less digits than its factorization.

224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 224140 is about 473.4342615401. The cubic root of 224140 is about 60.7444292565.

Adding to 224140 its reverse (41422), we get a palindrome (265562).

It can be divided in two parts, 2 and 24140, that added together give a palindrome (24142).

The spelling of 224140 in words is "two hundred twenty-four thousand, one hundred forty", and thus it is an iban number.

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1601 3202 6404 8005 11207 16010 22414 32020 44828 56035 112070 224140