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253471960 = 23572339359
BaseRepresentation
bin11110001101110…
…10110011011000
3122122221201011101
433012322303120
51004342100320
641052441144
76165322210
oct1706726330
9578851141
10253471960
11120095265
1270a791b4
1340689b11
1425941240
15173bcc0a
hexf1bacd8

253471960 has 64 divisors (see below), whose sum is σ = 680140800. Its totient is φ = 83124096.

The previous prime is 253471949. The next prime is 253471973. The reversal of 253471960 is 69174352.

It is a congruent number.

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, 13240 + ... + 26119.

It is an arithmetic number, because the mean of its divisors is an integer number (10627200).

Almost surely, 2253471960 is an apocalyptic number.

253471960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253471960 is an abundant number, since it is smaller than the sum of its proper divisors (426668840).

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

253471960 is a wasteful number, since it uses less digits than its factorization.

253471960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39400 (or 39396 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 253471960 is about 15920.8027435805. The cubic root of 253471960 is about 632.8633916110.

The spelling of 253471960 in words is "two hundred fifty-three million, four hundred seventy-one thousand, nine hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 20 23 28 35 40 46 56 70 92 115 140 161 184 230 280 322 460 644 805 920 1288 1610 3220 6440 39359 78718 157436 196795 275513 314872 393590 551026 787180 905257 1102052 1377565 1574360 1810514 2204104 2755130 3621028 4526285 5510260 6336799 7242056 9052570 11020520 12673598 18105140 25347196 31683995 36210280 50694392 63367990 126735980 253471960