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387124249 = 3115717949
BaseRepresentation
bin10111000100110…
…000110000011001
3222222102221122011
4113010300300121
51243100433444
6102225225521
712410334061
oct2704606031
9888387564
10387124249
111895811a6
12a97922a1
1362283b05
14395b23a1
1523ebd734
hex17130c19

387124249 has 8 divisors (see below), whose sum is σ = 399916800. Its totient is φ = 374350800.

The previous prime is 387124223. The next prime is 387124267. The reversal of 387124249 is 942421783.

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 387124249 - 25 = 387124217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387124649) 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, 44727 + ... + 52675.

It is an arithmetic number, because the mean of its divisors is an integer number (49989600).

Almost surely, 2387124249 is an apocalyptic number.

It is an amenable number.

387124249 is a deficient number, since it is larger than the sum of its proper divisors (12792551).

387124249 is a wasteful number, since it uses less digits than its factorization.

387124249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9551.

The product of its digits is 96768, while the sum is 40.

The square root of 387124249 is about 19675.4732852859. The cubic root of 387124249 is about 728.8141433458.

The spelling of 387124249 in words is "three hundred eighty-seven million, one hundred twenty-four thousand, two hundred forty-nine".

Divisors: 1 31 1571 7949 48701 246419 12487879 387124249