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72238248 = 23324721347
BaseRepresentation
bin1000100111001…
…00010010101000
312000221002020200
410103210102220
5121443110443
611100152200
71535005065
oct423442250
9160832220
1072238248
113785a735
1220238660
1311c73534
149845c6c
15651ddd3
hex44e44a8

72238248 has 48 divisors (see below), whose sum is σ = 199817280. Its totient is φ = 23565984.

The previous prime is 72238241. The next prime is 72238259. The reversal of 72238248 is 84283227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72238241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7290 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (4162860).

Almost surely, 272238248 is an apocalyptic number.

It is an amenable number.

72238248 is an abundant number, since it is smaller than the sum of its proper divisors (127579032).

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

72238248 is a wasteful number, since it uses less digits than its factorization.

72238248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21406 (or 21399 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 72238248 is about 8499.3086777690. The cubic root of 72238248 is about 416.4751259004.

The spelling of 72238248 in words is "seventy-two million, two hundred thirty-eight thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 47 72 94 141 188 282 376 423 564 846 1128 1692 3384 21347 42694 64041 85388 128082 170776 192123 256164 384246 512328 768492 1003309 1536984 2006618 3009927 4013236 6019854 8026472 9029781 12039708 18059562 24079416 36119124 72238248