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72004852 = 2218001213
BaseRepresentation
bin1000100101010…
…11010011110100
312000111020002101
410102223103310
5121413123402
611051151444
71533013453
oct422532364
9160436071
1072004852
1137710347
1220145584
1311bc122a
1497c4b9a
1564c4b87
hex44ab4f4

72004852 has 6 divisors (see below), whose sum is σ = 126008498. Its totient is φ = 36002424.

The previous prime is 72004841. The next prime is 72004853. The reversal of 72004852 is 25840027.

It can be written as a sum of positive squares in only one way, i.e., 43744996 + 28259856 = 6614^2 + 5316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72004852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72004853) by changing a digit.

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 as a sum of consecutive naturals, namely, 9000603 + ... + 9000610.

Almost surely, 272004852 is an apocalyptic number.

It is an amenable number.

72004852 is a deficient number, since it is larger than the sum of its proper divisors (54003646).

72004852 is a wasteful number, since it uses less digits than its factorization.

72004852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18001217 (or 18001215 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 72004852 is about 8485.5672762639. The cubic root of 72004852 is about 416.0261093696.

Adding to 72004852 its reverse (25840027), we get a palindrome (97844879).

The spelling of 72004852 in words is "seventy-two million, four thousand, eight hundred fifty-two".

Divisors: 1 2 4 18001213 36002426 72004852