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3840030 = 232542667
BaseRepresentation
bin1110101001100000011110
321020002112100
432221200132
51440340110
6214145530
744432265
oct16514036
97202470
103840030
112193087
1213522a6
13a45b0c
1471d5dc
1550cbc0
hex3a981e

3840030 has 24 divisors (see below), whose sum is σ = 9984312. Its totient is φ = 1023984.

The previous prime is 3840017. The next prime is 3840037. The reversal of 3840030 is 300483.

3840030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3839985 and 3840012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840037) 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 11 ways as a sum of consecutive naturals, for example, 21244 + ... + 21423.

It is an arithmetic number, because the mean of its divisors is an integer number (416013).

Almost surely, 23840030 is an apocalyptic number.

3840030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3840030 is an abundant number, since it is smaller than the sum of its proper divisors (6144282).

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

3840030 is a wasteful number, since it uses less digits than its factorization.

3840030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42680 (or 42677 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3840030 is about 1959.5994488670. The cubic root of 3840030 is about 156.5951134444.

The spelling of 3840030 in words is "three million, eight hundred forty thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 42667 85334 128001 213335 256002 384003 426670 640005 768006 1280010 1920015 3840030