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318026028 = 223194193329
BaseRepresentation
bin10010111101001…
…011000100101100
3211011102101200210
4102331023010230
51122403313103
651320222420
710611114405
oct2275130454
9734371623
10318026028
11153576731
128a60aa10
1350b6c8a8
14303469ac
151cdbee03
hex12f4b12c

318026028 has 48 divisors (see below), whose sum is σ = 783216000. Its totient is φ = 100159488.

The previous prime is 318026011. The next prime is 318026029. The reversal of 318026028 is 820620813.

It is a super-2 number, since 2×3180260282 = 202281108970913568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318025986 and 318026004.

It is not an unprimeable number, because it can be changed into a prime (318026029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93868 + ... + 97196.

It is an arithmetic number, because the mean of its divisors is an integer number (16317000).

Almost surely, 2318026028 is an apocalyptic number.

318026028 is a gapful number since it is divisible by the number (38) 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 318026028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391608000).

318026028 is an abundant number, since it is smaller than the sum of its proper divisors (465189972).

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

318026028 is a wasteful number, since it uses less digits than its factorization.

318026028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 318026028 is about 17833.2842740758. The cubic root of 318026028 is about 682.5810415110.

The spelling of 318026028 in words is "three hundred eighteen million, twenty-six thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 419 838 1257 1676 2514 3329 5028 6658 7961 9987 13316 15922 19974 23883 31844 39948 47766 63251 95532 126502 189753 253004 379506 759012 1394851 2789702 4184553 5579404 8369106 16738212 26502169 53004338 79506507 106008676 159013014 318026028