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387080429 = 1729785153
BaseRepresentation
bin10111000100100…
…110000011101101
3222222100201112012
4113010212003231
51243043033204
6102224251005
712410062241
oct2704460355
9888321465
10387080429
1118955128a
12a9770a65
1362269b98
14395a0421
1523eb076e
hex171260ed

387080429 has 8 divisors (see below), whose sum is σ = 423983160. Its totient is φ = 351748096.

The previous prime is 387080423. The next prime is 387080443. The reversal of 387080429 is 924080783.

It can be written as a sum of positive squares in 4 ways, for example, as 142157929 + 244922500 = 11923^2 + 15650^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387080429 - 24 = 387080413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387080423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392084 + ... + 393069.

It is an arithmetic number, because the mean of its divisors is an integer number (52997895).

Almost surely, 2387080429 is an apocalyptic number.

It is an amenable number.

387080429 is a deficient number, since it is larger than the sum of its proper divisors (36902731).

387080429 is a wasteful number, since it uses less digits than its factorization.

387080429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785199.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 387080429 is about 19674.3596846251. The cubic root of 387080429 is about 728.7866432681.

The spelling of 387080429 in words is "three hundred eighty-seven million, eighty thousand, four hundred twenty-nine".

Divisors: 1 17 29 493 785153 13347601 22769437 387080429