Search a number
-
+
380354689 = 11139532791
BaseRepresentation
bin10110101010111…
…100000010000001
3222111201000112201
4112222330002001
51234332322224
6101424153201
712265650541
oct2652740201
9874630481
10380354689
11185778120
12a7468801
1360a53760
143872d321
15235d2a44
hex16abc081

380354689 has 16 divisors (see below), whose sum is σ = 447479424. Its totient is φ = 318729600.

The previous prime is 380354687. The next prime is 380354729. The reversal of 380354689 is 986453083.

It is a cyclic number.

It is not a de Polignac number, because 380354689 - 21 = 380354687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380354683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134884 + ... + 137674.

It is an arithmetic number, because the mean of its divisors is an integer number (27967464).

Almost surely, 2380354689 is an apocalyptic number.

It is an amenable number.

380354689 is a deficient number, since it is larger than the sum of its proper divisors (67124735).

380354689 is a wasteful number, since it uses less digits than its factorization.

380354689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 380354689 is about 19502.6841485986. The cubic root of 380354689 is about 724.5409310998.

It can be divided in two parts, 38035 and 4689, that added together give a palindrome (42724).

The spelling of 380354689 in words is "three hundred eighty million, three hundred fifty-four thousand, six hundred eighty-nine".

Divisors: 1 11 13 143 953 2791 10483 12389 30701 36283 136279 399113 2659823 29258053 34577699 380354689