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18028050 = 2352313877
BaseRepresentation
bin100010011000…
…1011000010010
31020220220211120
41010301120102
514103344200
61442223110
7306143625
oct104613022
936826746
1018028050
11a1a3817
126054a96
1339729b1
142573dbc
1518b19a0
hex1131612

18028050 has 48 divisors (see below), whose sum is σ = 46163712. Its totient is φ = 4651200.

The previous prime is 18028033. The next prime is 18028057. The reversal of 18028050 is 5082081.

It is a self number, because there is not a number n which added to its sum of digits gives 18028050.

It is not an unprimeable number, because it can be changed into a prime (18028057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2712 + ... + 6588.

It is an arithmetic number, because the mean of its divisors is an integer number (961744).

Almost surely, 218028050 is an apocalyptic number.

18028050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18028050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23081856).

18028050 is an abundant number, since it is smaller than the sum of its proper divisors (28135662).

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

18028050 is a wasteful number, since it uses less digits than its factorization.

18028050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923 (or 3918 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 18028050 is about 4245.9451244688. The cubic root of 18028050 is about 262.2102017243.

The spelling of 18028050 in words is "eighteen million, twenty-eight thousand, fifty".

Divisors: 1 2 3 5 6 10 15 25 30 31 50 62 75 93 150 155 186 310 465 775 930 1550 2325 3877 4650 7754 11631 19385 23262 38770 58155 96925 116310 120187 193850 240374 290775 360561 581550 600935 721122 1201870 1802805 3004675 3605610 6009350 9014025 18028050