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72827872 = 2513175067
BaseRepresentation
bin1000101011101…
…00001111100000
312002001001001121
410111310033200
5122120442442
611120542024
71543012105
oct425641740
9162031047
1072827872
1138122727
1220481914
131211ba20
14995aaac
1565d8967
hex45743e0

72827872 has 24 divisors (see below), whose sum is σ = 154409976. Its totient is φ = 33612672.

The previous prime is 72827869. The next prime is 72827873. The reversal of 72827872 is 27872827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72827873) 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, 87118 + ... + 87949.

It is an arithmetic number, because the mean of its divisors is an integer number (6433749).

Almost surely, 272827872 is an apocalyptic number.

It is an amenable number.

72827872 is an abundant number, since it is smaller than the sum of its proper divisors (81582104).

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

72827872 is a wasteful number, since it uses less digits than its factorization.

72827872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175090 (or 175082 counting only the distinct ones).

The product of its digits is 175616, while the sum is 43.

The square root of 72827872 is about 8533.9247711706. The cubic root of 72827872 is about 417.6051765089.

The spelling of 72827872 in words is "seventy-two million, eight hundred twenty-seven thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 175067 350134 700268 1400536 2275871 2801072 4551742 5602144 9103484 18206968 36413936 72827872