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254212340 = 22531340609
BaseRepresentation
bin11110010011011…
…11100011110100
3122201100022202212
433021233203310
51010034243330
641120352552
76204524564
oct1711574364
9581308685
10254212340
11120550548
1271175758
1340888b05
1425a94da4
15174b7295
hexf26f8f4

254212340 has 24 divisors (see below), whose sum is σ = 535564680. Its totient is φ = 101357568.

The previous prime is 254212319. The next prime is 254212349. The reversal of 254212340 is 43212452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8726116 + 245486224 = 2954^2 + 15668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254212349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14045 + ... + 26564.

It is an arithmetic number, because the mean of its divisors is an integer number (22315195).

Almost surely, 2254212340 is an apocalyptic number.

254212340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254212340 is an abundant number, since it is smaller than the sum of its proper divisors (281352340).

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

254212340 is a wasteful number, since it uses less digits than its factorization.

254212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40931 (or 40929 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 254212340 is about 15944.0377571053. The cubic root of 254212340 is about 633.4789809688.

Adding to 254212340 its reverse (43212452), we get a palindrome (297424792).

The spelling of 254212340 in words is "two hundred fifty-four million, two hundred twelve thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 313 626 1252 1565 3130 6260 40609 81218 162436 203045 406090 812180 12710617 25421234 50842468 63553085 127106170 254212340