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6380478 = 2331361149
BaseRepresentation
bin11000010101101110111110
3110000011101000
4120111232332
53113133403
6344431130
7105142656
oct30255676
913004330
106380478
113668825
1221784a6
131425240
14bc1366
158607a3
hex615bbe

6380478 has 64 divisors (see below), whose sum is σ = 15624000. Its totient is φ = 1918080.

The previous prime is 6380471. The next prime is 6380483. The reversal of 6380478 is 8740836.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6380471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42748 + ... + 42896.

It is an arithmetic number, because the mean of its divisors is an integer number (244125).

Almost surely, 26380478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6380478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7812000).

6380478 is an abundant number, since it is smaller than the sum of its proper divisors (9243522).

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

6380478 is a wasteful number, since it uses less digits than its factorization.

6380478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6380478 is about 2525.9608072969. The cubic root of 6380478 is about 185.4745837895.

The spelling of 6380478 in words is "six million, three hundred eighty thousand, four hundred seventy-eight".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 61 78 117 122 149 183 234 298 351 366 447 549 702 793 894 1098 1341 1586 1647 1937 2379 2682 3294 3874 4023 4758 5811 7137 8046 9089 11622 14274 17433 18178 21411 27267 34866 42822 52299 54534 81801 104598 118157 163602 236314 245403 354471 490806 708942 1063413 2126826 3190239 6380478