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18248070 = 235608269
BaseRepresentation
bin100010110011…
…1000110000110
31021100002122110
41011213012012
514132414240
61451041450
7311051241
oct105470606
937302573
1018248070
11a334055
126140286
133a1bb99
1425d0258
151906c80
hex1167186

18248070 has 16 divisors (see below), whose sum is σ = 43795440. Its totient is φ = 4866144.

The previous prime is 18248063. The next prime is 18248071. The reversal of 18248070 is 7084281.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 608269 = 18248070 / (1 + 8 + 2 + 4 + 8 + 0 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18248071) 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, 304105 + ... + 304164.

It is an arithmetic number, because the mean of its divisors is an integer number (2737215).

Almost surely, 218248070 is an apocalyptic number.

18248070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18248070 is an abundant number, since it is smaller than the sum of its proper divisors (25547370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18248070 is a wasteful number, since it uses less digits than its factorization.

18248070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608279.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 18248070 is about 4271.7759772722. The cubic root of 18248070 is about 263.2725900949.

The spelling of 18248070 in words is "eighteen million, two hundred forty-eight thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 608269 1216538 1824807 3041345 3649614 6082690 9124035 18248070