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72211106 = 21121791667
BaseRepresentation
bin1000100110111…
…01101010100010
312000212201000102
410103131222202
5121441223411
611055422402
71534533002
oct423355242
9160781012
1072211106
1137841300
1220224a02
1311c64086
14983a002
156515d3b
hex44ddaa2

72211106 has 24 divisors (see below), whose sum is σ = 119795760. Its totient is φ = 32620280.

The previous prime is 72211093. The next prime is 72211123. The reversal of 72211106 is 60111227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42485 + ... + 44151.

It is an arithmetic number, because the mean of its divisors is an integer number (4991490).

Almost surely, 272211106 is an apocalyptic number.

72211106 is a deficient number, since it is larger than the sum of its proper divisors (47584654).

72211106 is a wasteful number, since it uses less digits than its factorization.

72211106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 72211106 is about 8497.7118096579. The cubic root of 72211106 is about 416.4229587811.

The spelling of 72211106 in words is "seventy-two million, two hundred eleven thousand, one hundred six".

Divisors: 1 2 11 22 121 179 242 358 1667 1969 3334 3938 18337 21659 36674 43318 201707 298393 403414 596786 3282323 6564646 36105553 72211106