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4778040 = 2335291373
BaseRepresentation
bin10010001110100000111000
322222202020110
4102032200320
52210344130
6250224320
755420101
oct22164070
98882213
104778040
1127738a3
1217250a0
13cb3a57
148c53a8
15645ab0
hex48e838

4778040 has 64 divisors (see below), whose sum is σ = 14839200. Its totient is φ = 1229312.

The previous prime is 4778029. The next prime is 4778041. The reversal of 4778040 is 408774.

4778040 is digitally balanced in base 5, 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 4777989 and 4778007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778041) 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, 2794 + ... + 4166.

Almost surely, 24778040 is an apocalyptic number.

4778040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7419600).

4778040 is an abundant number, since it is smaller than the sum of its proper divisors (10061160).

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

4778040 is a wasteful number, since it uses less digits than its factorization.

4778040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 4778040 is about 2185.8728233820. The cubic root of 4778040 is about 168.4288927957.

It can be divided in two parts, 47 and 78040, that added together give a palindrome (78087).

The spelling of 4778040 in words is "four million, seven hundred seventy-eight thousand, forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 29 30 40 58 60 87 116 120 145 174 232 290 348 435 580 696 870 1160 1373 1740 2746 3480 4119 5492 6865 8238 10984 13730 16476 20595 27460 32952 39817 41190 54920 79634 82380 119451 159268 164760 199085 238902 318536 398170 477804 597255 796340 955608 1194510 1592680 2389020 4778040