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72113448 = 23311273157
BaseRepresentation
bin1000100110001…
…01110100101000
312000200202001110
410103011310220
5121430112243
611053350320
71533645201
oct423056450
9160622043
1072113448
11377849a0
12201983a0
1311c2b7a4
1498125a8
1564e6e33
hex44c5d28

72113448 has 32 divisors (see below), whose sum is σ = 196673760. Its totient is φ = 21852480.

The previous prime is 72113413. The next prime is 72113449. The reversal of 72113448 is 84431127.

It is not an unprimeable number, because it can be changed into a prime (72113449) 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 7 ways as a sum of consecutive naturals, for example, 136315 + ... + 136842.

It is an arithmetic number, because the mean of its divisors is an integer number (6146055).

Almost surely, 272113448 is an apocalyptic number.

It is an amenable number.

72113448 is an abundant number, since it is smaller than the sum of its proper divisors (124560312).

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

72113448 is a wasteful number, since it uses less digits than its factorization.

72113448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273177 (or 273173 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 72113448 is about 8491.9637304925. The cubic root of 72113448 is about 416.2351511986.

The spelling of 72113448 in words is "seventy-two million, one hundred thirteen thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 273157 546314 819471 1092628 1638942 2185256 3004727 3277884 6009454 6555768 9014181 12018908 18028362 24037816 36056724 72113448