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380438481 = 3126812827
BaseRepresentation
bin10110101011010…
…000011111010001
3222111212021111010
4112223100133101
51234343012411
6101430041133
712266450043
oct2653203721
9874767433
10380438481
11185825075
12a74a91a9
1360a82937
1438751a93
15235ec7a6
hex16ad07d1

380438481 has 4 divisors (see below), whose sum is σ = 507251312. Its totient is φ = 253625652.

The previous prime is 380438473. The next prime is 380438497. The reversal of 380438481 is 184834083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 380438481 - 23 = 380438473 is a prime.

It is a super-2 number, since 2×3804384812 = 289466875651174722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380438411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63406411 + ... + 63406416.

It is an arithmetic number, because the mean of its divisors is an integer number (126812828).

Almost surely, 2380438481 is an apocalyptic number.

It is an amenable number.

380438481 is a deficient number, since it is larger than the sum of its proper divisors (126812831).

380438481 is a wasteful number, since it uses less digits than its factorization.

380438481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126812830.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 380438481 is about 19504.8322474201. The cubic root of 380438481 is about 724.5941325613.

The spelling of 380438481 in words is "three hundred eighty million, four hundred thirty-eight thousand, four hundred eighty-one".

Divisors: 1 3 126812827 380438481