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252982290 = 235112333331
BaseRepresentation
bin11110001010000…
…11010000010010
3122122000211110110
433011003100102
51004230413130
641034142150
76161212461
oct1705032022
9578024413
10252982290
1111a890380
1270881956
1340547c82
14258549d8
1517322ab0
hexf143412

252982290 has 64 divisors (see below), whose sum is σ = 691172352. Its totient is φ = 58660800.

The previous prime is 252982271. The next prime is 252982291. The reversal of 252982290 is 92289252.

It is not an unprimeable number, because it can be changed into a prime (252982291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9076 + ... + 24255.

It is an arithmetic number, because the mean of its divisors is an integer number (10799568).

Almost surely, 2252982290 is an apocalyptic number.

252982290 is an abundant number, since it is smaller than the sum of its proper divisors (438190062).

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

252982290 is a wasteful number, since it uses less digits than its factorization.

252982290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33375.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 252982290 is about 15905.4170017639. The cubic root of 252982290 is about 632.4555963558.

The spelling of 252982290 in words is "two hundred fifty-two million, nine hundred eighty-two thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 23 30 33 46 55 66 69 110 115 138 165 230 253 330 345 506 690 759 1265 1518 2530 3795 7590 33331 66662 99993 166655 199986 333310 366641 499965 733282 766613 999930 1099923 1533226 1833205 2199846 2299839 3666410 3833065 4599678 5499615 7666130 8432743 10999230 11499195 16865486 22998390 25298229 42163715 50596458 84327430 126491145 252982290