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254262420 = 223253134513
BaseRepresentation
bin11110010011110…
…11110010010100
3122201102212110200
433021323302110
51010042344140
641121420500
76205123566
oct1711736224
9581385420
10254262420
11120585135
127119a730
13408a5849
1425aa9336
15174c7030
hexf27bc94

254262420 has 72 divisors (see below), whose sum is σ = 773898216. Its totient is φ = 67571712.

The previous prime is 254262413. The next prime is 254262451. The reversal of 254262420 is 24262452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40985604 + 213276816 = 6402^2 + 14604^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54084 + ... + 58596.

Almost surely, 2254262420 is an apocalyptic number.

254262420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254262420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386949108).

254262420 is an abundant number, since it is smaller than the sum of its proper divisors (519635796).

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

254262420 is a wasteful number, since it uses less digits than its factorization.

254262420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 254262420 is about 15945.6081727854. The cubic root of 254262420 is about 633.5205768310.

The spelling of 254262420 in words is "two hundred fifty-four million, two hundred sixty-two thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 313 626 939 1252 1565 1878 2817 3130 3756 4513 4695 5634 6260 9026 9390 11268 13539 14085 18052 18780 22565 27078 28170 40617 45130 54156 56340 67695 81234 90260 135390 162468 203085 270780 406170 812340 1412569 2825138 4237707 5650276 7062845 8475414 12713121 14125690 16950828 21188535 25426242 28251380 42377070 50852484 63565605 84754140 127131210 254262420