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30000250 = 253723179
BaseRepresentation
bin111001001110…
…0010001111010
32002110011121101
41302130101322
530140002000
62551002014
7512666200
oct162342172
962404541
1030000250
1115a306a5
12a06930a
1362a5137
143dad070
152978e6a
hex1c9c47a

30000250 has 96 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 9828000.

The previous prime is 30000247. The next prime is 30000251. The reversal of 30000250 is 5200003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379711 + ... + 379789.

It is an arithmetic number, because the mean of its divisors is an integer number (711360).

Almost surely, 230000250 is an apocalyptic number.

30000250 is an abundant number, since it is smaller than the sum of its proper divisors (38290310).

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

30000250 is a wasteful number, since it uses less digits than its factorization.

30000250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 30000250 is about 5477.2483967773. The cubic root of 30000250 is about 310.7241137131.

30000250 divided by its sum of digits (10) gives a triangular number (3000025 = T2449).

Adding to 30000250 its reverse (5200003), we get a palindrome (35200253).

The spelling of 30000250 in words is "thirty million, two hundred fifty", and thus it is an aban number.

Divisors: 1 2 5 7 10 14 25 31 35 49 50 62 70 79 98 125 155 158 175 217 245 250 310 350 395 434 490 553 775 790 875 1085 1106 1225 1519 1550 1750 1975 2170 2449 2450 2765 3038 3871 3875 3950 4898 5425 5530 6125 7595 7742 7750 9875 10850 12245 12250 13825 15190 17143 19355 19750 24490 27125 27650 34286 37975 38710 54250 61225 69125 75950 85715 96775 120001 122450 138250 171430 189875 193550 240002 306125 379750 428575 483875 600005 612250 857150 967750 1200010 2142875 3000025 4285750 6000050 15000125 30000250