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252888320 = 285197569
BaseRepresentation
bin11110001001011…
…00010100000000
3122121212001120002
433010230110000
51004214411240
641032135132
76160341506
oct1704542400
9577761502
10252888320
1111a826813
12708374a8
1340514279
142582c676
1517304d15
hexf12c500

252888320 has 36 divisors (see below), whose sum is σ = 605749620. Its totient is φ = 101154816.

The previous prime is 252888319. The next prime is 252888329. The reversal of 252888320 is 23888252.

It can be written as a sum of positive squares in 2 ways, for example, as 170877184 + 82011136 = 13072^2 + 9056^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252888329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97505 + ... + 100064.

Almost surely, 2252888320 is an apocalyptic number.

252888320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252888320 is an abundant number, since it is smaller than the sum of its proper divisors (352861300).

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

252888320 is an equidigital number, since it uses as much as digits as its factorization.

252888320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197590 (or 197576 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 252888320 is about 15902.4627023615. The cubic root of 252888320 is about 632.3772783405.

The spelling of 252888320 in words is "two hundred fifty-two million, eight hundred eighty-eight thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 197569 395138 790276 987845 1580552 1975690 3161104 3951380 6322208 7902760 12644416 15805520 25288832 31611040 50577664 63222080 126444160 252888320