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9972218733 = 322714643493
BaseRepresentation
bin10010100100110001…
…11111101101101101
3221201222111012101120
421102120333231231
5130410341444413
64325311131153
7502056314001
oct112230775555
927658435346
109972218733
11425806a594
121b23813ab9
13c2c011359
146a85b0701
153d5721723
hex25263fb6d

9972218733 has 8 divisors (see below), whose sum is σ = 13354866528. Its totient is φ = 6618858384.

The previous prime is 9972218687. The next prime is 9972218827. The reversal of 9972218733 is 3378122799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9972218733 - 226 = 9905109869 is a prime.

It is a super-2 number, since 2×99722187332 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9972218033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7321066 + ... + 7322427.

It is an arithmetic number, because the mean of its divisors is an integer number (1669358316).

Almost surely, 29972218733 is an apocalyptic number.

It is an amenable number.

9972218733 is a deficient number, since it is larger than the sum of its proper divisors (3382647795).

9972218733 is a wasteful number, since it uses less digits than its factorization.

9972218733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14643723.

The product of its digits is 1143072, while the sum is 51.

The square root of 9972218733 is about 99860.9970559077. The cubic root of 9972218733 is about 2152.4377421186.

The spelling of 9972218733 in words is "nine billion, nine hundred seventy-two million, two hundred eighteen thousand, seven hundred thirty-three".

Divisors: 1 3 227 681 14643493 43930479 3324072911 9972218733