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380691 = 3242299
BaseRepresentation
bin1011100111100010011
3201100012200
41130330103
544140231
612054243
73143613
oct1347423
9640180
10380691
11240023
12164383
1310437c
149ca43
1577be6
hex5cf13

380691 has 6 divisors (see below), whose sum is σ = 549900. Its totient is φ = 253788.

The previous prime is 380657. The next prime is 380707. The reversal of 380691 is 196083.

It is not a de Polignac number, because 380691 - 27 = 380563 is a prime.

380691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (380621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21141 + ... + 21158.

It is an arithmetic number, because the mean of its divisors is an integer number (91650).

2380691 is an apocalyptic number.

380691 is a deficient number, since it is larger than the sum of its proper divisors (169209).

380691 is a wasteful number, since it uses less digits than its factorization.

380691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42305 (or 42302 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 380691 is about 617.0016207434. The cubic root of 380691 is about 72.4754415433.

The spelling of 380691 in words is "three hundred eighty thousand, six hundred ninety-one".

Divisors: 1 3 9 42299 126897 380691