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72618085 = 5591991237
BaseRepresentation
bin1000101010000…
…01000001100101
312001122101021201
410111001001211
5122042234320
611112242501
71541146351
oct425010145
9161571251
1072618085
1137a9a051
12203a0431
13120773a7
149904461
15659670a
hex4541065

72618085 has 16 divisors (see below), whose sum is σ = 89136000. Its totient is φ = 56776896.

The previous prime is 72618053. The next prime is 72618097. The reversal of 72618085 is 58081627.

It is a cyclic number.

It is not a de Polignac number, because 72618085 - 25 = 72618053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58087 + ... + 59323.

It is an arithmetic number, because the mean of its divisors is an integer number (5571000).

Almost surely, 272618085 is an apocalyptic number.

It is an amenable number.

72618085 is a deficient number, since it is larger than the sum of its proper divisors (16517915).

72618085 is a wasteful number, since it uses less digits than its factorization.

72618085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 72618085 is about 8521.6245516920. The cubic root of 72618085 is about 417.2038082297.

The spelling of 72618085 in words is "seventy-two million, six hundred eighteen thousand, eighty-five".

Divisors: 1 5 59 199 295 995 1237 6185 11741 58705 72983 246163 364915 1230815 14523617 72618085