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72299 = 197367
BaseRepresentation
bin10001101001101011
310200011202
4101221223
54303144
61314415
7420533
oct215153
9120152
1072299
114a357
1235a0b
1326ba6
141c4c3
151664e
hex11a6b

72299 has 4 divisors (see below), whose sum is σ = 72864. Its totient is φ = 71736.

The previous prime is 72287. The next prime is 72307. The reversal of 72299 is 99227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99227 = 671481.

It is a cyclic number.

It is not a de Polignac number, because 72299 - 28 = 72043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72229) 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, 14 + ... + 380.

It is an arithmetic number, because the mean of its divisors is an integer number (18216).

272299 is an apocalyptic number.

72299 is a deficient number, since it is larger than the sum of its proper divisors (565).

72299 is a wasteful number, since it uses less digits than its factorization.

72299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its digits is 2268, while the sum is 29.

The square root of 72299 is about 268.8847336685. The cubic root of 72299 is about 41.6591844342.

It can be divided in two parts, 72 and 299, that multiplied together give a triangular number (21528 = T207).

The spelling of 72299 in words is "seventy-two thousand, two hundred ninety-nine".

Divisors: 1 197 367 72299