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254912040 = 233251734093
BaseRepresentation
bin11110011000110…
…10011000101000
3122202122212120200
433030122120220
51010224141130
641143352200
76213500535
oct1714323050
9582585520
10254912040
11120989209
1271452660
1340a72436
1425bd7d8c
15175a4760
hexf31a628

254912040 has 96 divisors (see below), whose sum is σ = 833456520. Its totient is φ = 67567104.

The previous prime is 254912029. The next prime is 254912057. The reversal of 254912040 is 40219452.

It can be written as a sum of positive squares in 4 ways, for example, as 237221604 + 17690436 = 15402^2 + 4206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 254911995 and 254912013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60234 + ... + 64326.

Almost surely, 2254912040 is an apocalyptic number.

254912040 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 254912040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416728260).

254912040 is an abundant number, since it is smaller than the sum of its proper divisors (578544480).

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

254912040 is a wasteful number, since it uses less digits than its factorization.

254912040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 254912040 is about 15965.9650506946. The cubic root of 254912040 is about 634.0596493417.

The spelling of 254912040 in words is "two hundred fifty-four million, nine hundred twelve thousand, forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 173 180 346 360 519 692 865 1038 1384 1557 1730 2076 2595 3114 3460 4093 4152 5190 6228 6920 7785 8186 10380 12279 12456 15570 16372 20465 20760 24558 31140 32744 36837 40930 49116 61395 62280 73674 81860 98232 122790 147348 163720 184185 245580 294696 368370 491160 708089 736740 1416178 1473480 2124267 2832356 3540445 4248534 5664712 6372801 7080890 8497068 10621335 12745602 14161780 16994136 21242670 25491204 28323560 31864005 42485340 50982408 63728010 84970680 127456020 254912040