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253350020 = 225711164513
BaseRepresentation
bin11110001100111…
…01000010000100
3122122201111220002
433012131002010
51004324200040
641050100432
76164303540
oct1706350204
9578644802
10253350020
11120011690
1270a1a718
1340646471
142590ca20
1517396a15
hexf19d084

253350020 has 48 divisors (see below), whose sum is σ = 663320448. Its totient is φ = 78965760.

The previous prime is 253350007. The next prime is 253350059. The reversal of 253350020 is 20053352.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 253349974 and 253350001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80717 + ... + 83796.

It is an arithmetic number, because the mean of its divisors is an integer number (13819176).

Almost surely, 2253350020 is an apocalyptic number.

253350020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253350020 is an abundant number, since it is smaller than the sum of its proper divisors (409970428).

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

253350020 is a wasteful number, since it uses less digits than its factorization.

253350020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164540 (or 164538 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 253350020 is about 15916.9727021190. The cubic root of 253350020 is about 632.7618896008.

The spelling of 253350020 in words is "two hundred fifty-three million, three hundred fifty thousand, twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 164513 329026 658052 822565 1151591 1645130 1809643 2303182 3290260 3619286 4606364 5757955 7238572 9048215 11515910 12667501 18096430 23031820 25335002 36192860 50670004 63337505 126675010 253350020