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72084887 = 747219103
BaseRepresentation
bin1000100101111…
…10110110010111
312000122021212122
410102332312113
5121423204022
611053010155
71533466010
oct422766627
9160567778
1072084887
1137765496
122018395b
1311c1b7a4
149806007
1564dd742
hex44bed97

72084887 has 8 divisors (see below), whose sum is σ = 84135936. Its totient is φ = 60472152.

The previous prime is 72084869. The next prime is 72084931. The reversal of 72084887 is 78848027.

It is a happy number.

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 72084887 - 212 = 72080791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72080887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109223 + ... + 109880.

It is an arithmetic number, because the mean of its divisors is an integer number (10516992).

Almost surely, 272084887 is an apocalyptic number.

72084887 is a deficient number, since it is larger than the sum of its proper divisors (12051049).

72084887 is a wasteful number, since it uses less digits than its factorization.

72084887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219157.

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 72084887 is about 8490.2819152252. The cubic root of 72084887 is about 416.1801930631.

The spelling of 72084887 in words is "seventy-two million, eighty-four thousand, eight hundred eighty-seven".

Divisors: 1 7 47 329 219103 1533721 10297841 72084887