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72207054 = 23237181599
BaseRepresentation
bin1000100110111…
…00101011001110
312000212111110100
410103130223032
5121441111204
611055351530
71534515123
oct423345316
9160774410
1072207054
1137839257
12202225a6
1311c6228a
14983874a
156514a39
hex44dcace

72207054 has 48 divisors (see below), whose sum is σ = 161834400. Its totient is φ = 23250240.

The previous prime is 72206999. The next prime is 72207077. The reversal of 72207054 is 45070227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120247 + ... + 120845.

It is an arithmetic number, because the mean of its divisors is an integer number (3371550).

Almost surely, 272207054 is an apocalyptic number.

72207054 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72207054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80917200).

72207054 is an abundant number, since it is smaller than the sum of its proper divisors (89627346).

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

72207054 is a wasteful number, since it uses less digits than its factorization.

72207054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 72207054 is about 8497.4733891905. The cubic root of 72207054 is about 416.4151696866.

The spelling of 72207054 in words is "seventy-two million, two hundred seven thousand, fifty-four".

Divisors: 1 2 3 6 9 18 37 74 111 181 222 333 362 543 599 666 1086 1198 1629 1797 3258 3594 5391 6697 10782 13394 20091 22163 40182 44326 60273 66489 108419 120546 132978 199467 216838 325257 398934 650514 975771 1951542 4011503 8023006 12034509 24069018 36103527 72207054