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387053420 = 225131488667
BaseRepresentation
bin10111000100011…
…111011101101100
3222222022100110212
4113010133131230
51243041202140
6102223521552
712406620425
oct2704373554
9888270425
10387053420
11189532a66
12a97592b8
136225a7c0
143959464c
1523ea7765
hex1711f76c

387053420 has 24 divisors (see below), whose sum is σ = 875336784. Its totient is φ = 142911936.

The previous prime is 387053369. The next prime is 387053431. The reversal of 387053420 is 24350783.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744074 + ... + 744593.

It is an arithmetic number, because the mean of its divisors is an integer number (36472366).

Almost surely, 2387053420 is an apocalyptic number.

It is an amenable number.

387053420 is an abundant number, since it is smaller than the sum of its proper divisors (488283364).

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

387053420 is a wasteful number, since it uses less digits than its factorization.

387053420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488689 (or 1488687 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 387053420 is about 19673.6732716593. The cubic root of 387053420 is about 728.7696922205.

The spelling of 387053420 in words is "three hundred eighty-seven million, fifty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1488667 2977334 5954668 7443335 14886670 19352671 29773340 38705342 77410684 96763355 193526710 387053420