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18025147000 = 235372575021
BaseRepresentation
bin10000110010011000…
…011110101001111000
31201112012111100020001
4100302120132221320
5243403414201000
612140341242344
71205452135660
oct206230365170
951465440201
1018025147000
11770a7a8803
1235b07033b4
1319134c6673
14c2dcd51a0
157076c446a
hex43261ea78

18025147000 has 64 divisors (see below), whose sum is σ = 48204411840. Its totient is φ = 6180048000.

The previous prime is 18025146967. The next prime is 18025147003. The reversal of 18025147000 is 74152081.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 18025147000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025147003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1280511 + ... + 1294510.

It is an arithmetic number, because the mean of its divisors is an integer number (753193935).

Almost surely, 218025147000 is an apocalyptic number.

18025147000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18025147000 is an abundant number, since it is smaller than the sum of its proper divisors (30179264840).

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

18025147000 is a wasteful number, since it uses less digits than its factorization.

18025147000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575049 (or 2575035 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 18025147000 its reverse (74152081), we get a palindrome (18099299081).

It can be divided in two parts, 18025 and 147000, that added together give a triangular number (165025 = T574).

The spelling of 18025147000 in words is "eighteen billion, twenty-five million, one hundred forty-seven thousand".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 125 140 175 200 250 280 350 500 700 875 1000 1400 1750 3500 7000 2575021 5150042 10300084 12875105 18025147 20600168 25750210 36050294 51500420 64375525 72100588 90125735 103000840 128751050 144201176 180251470 257502100 321877625 360502940 450628675 515004200 643755250 721005880 901257350 1287510500 1802514700 2253143375 2575021000 3605029400 4506286750 9012573500 18025147000