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387080408 = 231113794283
BaseRepresentation
bin10111000100100…
…110000011011000
3222222100201111102
4113010212003120
51243043033113
6102224250532
712410062211
oct2704460330
9888321442
10387080408
11189551270
12a9770a48
1362269b80
14395a0408
1523eb0758
hex171260d8

387080408 has 64 divisors (see below), whose sum is σ = 863654400. Its totient is φ = 160318080.

The previous prime is 387080401. The next prime is 387080413. The reversal of 387080408 is 804080783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387080401) 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, 88235 + ... + 92517.

It is an arithmetic number, because the mean of its divisors is an integer number (13494600).

Almost surely, 2387080408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387080408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431827200).

387080408 is an abundant number, since it is smaller than the sum of its proper divisors (476573992).

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

387080408 is a wasteful number, since it uses less digits than its factorization.

387080408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392 (or 4388 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 387080408 is about 19674.3591509355. The cubic root of 387080408 is about 728.7866300886.

The spelling of 387080408 in words is "three hundred eighty-seven million, eighty thousand, four hundred eight".

Divisors: 1 2 4 8 11 13 22 26 44 52 79 88 104 143 158 286 316 572 632 869 1027 1144 1738 2054 3476 4108 4283 6952 8216 8566 11297 17132 22594 34264 45188 47113 55679 90376 94226 111358 188452 222716 338357 376904 445432 612469 676714 1224938 1353428 2449876 2706856 3721927 4398641 4899752 7443854 8797282 14887708 17594564 29775416 35189128 48385051 96770102 193540204 387080408