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380998207 = 509748523
BaseRepresentation
bin10110101101011…
…001001000111111
3222112220201021201
4112231121020333
51240013420312
6101450040331
712304300642
oct2655311077
9875821251
10380998207
11186077657
12a77190a7
1360c1a635
1438859a59
15236ad557
hex16b5923f

380998207 has 4 divisors (see below), whose sum is σ = 381747240. Its totient is φ = 380249176.

The previous prime is 380998187. The next prime is 380998229. The reversal of 380998207 is 702899083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-380998207 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 (380998307) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 373753 + ... + 374770.

It is an arithmetic number, because the mean of its divisors is an integer number (95436810).

Almost surely, 2380998207 is an apocalyptic number.

380998207 is a deficient number, since it is larger than the sum of its proper divisors (749033).

380998207 is an equidigital number, since it uses as much as digits as its factorization.

380998207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749032.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 380998207 is about 19519.1753668028. The cubic root of 380998207 is about 724.9493152042.

The spelling of 380998207 in words is "three hundred eighty million, nine hundred ninety-eight thousand, two hundred seven".

Divisors: 1 509 748523 380998207