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387371490 = 235111173853
BaseRepresentation
bin10111000101101…
…101000111100010
3222222220111210020
4113011231013202
51243131341430
6102234414310
712412413642
oct2705550742
9888814706
10387371490
1118972aa30
12a9891396
136233c4cc
1439638522
152401bb10
hex1716d1e2

387371490 has 32 divisors (see below), whose sum is σ = 1014209856. Its totient is φ = 93908160.

The previous prime is 387371483. The next prime is 387371513. The reversal of 387371490 is 94173783.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586597 + ... + 587256.

It is an arithmetic number, because the mean of its divisors is an integer number (31694058).

Almost surely, 2387371490 is an apocalyptic number.

387371490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387371490 is an abundant number, since it is smaller than the sum of its proper divisors (626838366).

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

387371490 is a wasteful number, since it uses less digits than its factorization.

387371490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173874.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 387371490 is about 19681.7552570903. The cubic root of 387371490 is about 728.9692652832.

The spelling of 387371490 in words is "three hundred eighty-seven million, three hundred seventy-one thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1173853 2347706 3521559 5869265 7043118 11738530 12912383 17607795 25824766 35215590 38737149 64561915 77474298 129123830 193685745 387371490