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72488773 = 775113789
BaseRepresentation
bin1000101001000…
…01011101000101
312001101210220101
410110201131011
5122024120043
611105404101
71540100350
oct424413505
9161353811
1072488773
1137a10985
1220339631
1312030586
1498ad297
15656d24d
hex4521745

72488773 has 8 divisors (see below), whose sum is σ = 82960640. Its totient is φ = 62046000.

The previous prime is 72488771. The next prime is 72488803. The reversal of 72488773 is 37788427.

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

It is a cyclic number.

It is not a de Polignac number, because 72488773 - 21 = 72488771 is a prime.

It is a super-3 number, since 3×724887733 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72488771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1638 + ... + 12151.

It is an arithmetic number, because the mean of its divisors is an integer number (10370080).

Almost surely, 272488773 is an apocalyptic number.

It is an amenable number.

72488773 is a deficient number, since it is larger than the sum of its proper divisors (10471867).

72488773 is a wasteful number, since it uses less digits than its factorization.

72488773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14547.

The product of its digits is 526848, while the sum is 46.

The square root of 72488773 is about 8514.0338852978. The cubic root of 72488773 is about 416.9560209491.

The spelling of 72488773 in words is "seventy-two million, four hundred eighty-eight thousand, seven hundred seventy-three".

Divisors: 1 7 751 5257 13789 96523 10355539 72488773