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23772085 = 57365129
BaseRepresentation
bin101101010101…
…1101110110101
31122201202011121
41122223232311
522041201320
62205303541
7406026241
oct132535665
948652147
1023772085
1112467357
127b64bb1
134c0432c
14322b421
1521488aa
hex16abbb5

23772085 has 8 divisors (see below), whose sum is σ = 28917720. Its totient is φ = 18756864.

The previous prime is 23772043. The next prime is 23772101. The reversal of 23772085 is 58027732.

It can be written as a sum of positive squares in 4 ways, for example, as 288369 + 23483716 = 537^2 + 4846^2 .

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 23772085 - 223 = 15383477 is a prime.

It is a super-2 number, since 2×237720852 = 1130224050494450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23772085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32200 + ... + 32929.

It is an arithmetic number, because the mean of its divisors is an integer number (3614715).

Almost surely, 223772085 is an apocalyptic number.

It is an amenable number.

23772085 is a deficient number, since it is larger than the sum of its proper divisors (5145635).

23772085 is an equidigital number, since it uses as much as digits as its factorization.

23772085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65207.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 23772085 is about 4875.6625190839. The cubic root of 23772085 is about 287.5339241632.

The spelling of 23772085 in words is "twenty-three million, seven hundred seventy-two thousand, eighty-five".

Divisors: 1 5 73 365 65129 325645 4754417 23772085