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72204141 = 359503811
BaseRepresentation
bin1000100110110…
…11111101101101
312000212100110110
410103123331231
5121441013031
611055330233
71534503462
oct423337555
9160770413
1072204141
1137837049
1220220979
1311c60b59
149837669
156513c46
hex44dbf6d

72204141 has 16 divisors (see below), whose sum is σ = 98219520. Its totient is φ = 47167920.

The previous prime is 72204109. The next prime is 72204149. The reversal of 72204141 is 14140227.

It is a happy number.

It is not a de Polignac number, because 72204141 - 25 = 72204109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88626 + ... + 89436.

It is an arithmetic number, because the mean of its divisors is an integer number (6138720).

Almost surely, 272204141 is an apocalyptic number.

It is an amenable number.

72204141 is a deficient number, since it is larger than the sum of its proper divisors (26015379).

72204141 is a wasteful number, since it uses less digits than its factorization.

72204141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 72204141 is about 8497.3019835710. The cubic root of 72204141 is about 416.4095698934.

Adding to 72204141 its reverse (14140227), we get a palindrome (86344368).

The spelling of 72204141 in words is "seventy-two million, two hundred four thousand, one hundred forty-one".

Divisors: 1 3 59 177 503 811 1509 2433 29677 47849 89031 143547 407933 1223799 24068047 72204141