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380719911 = 31113887459
BaseRepresentation
bin10110101100010…
…101001100100111
3222112101120112110
4112230111030213
51234431014121
6101440052103
712302031405
oct2654251447
9875346473
10380719911
111859a7560
12a7604033
1360b50a70
14387c6475
1523655d76
hex16b15327

380719911 has 16 divisors (see below), whose sum is σ = 596373120. Its totient is φ = 212989920.

The previous prime is 380719901. The next prime is 380719919. The reversal of 380719911 is 119917083.

It is not a de Polignac number, because 380719911 - 27 = 380719783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 380719911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380719919) 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, 443301 + ... + 444158.

It is an arithmetic number, because the mean of its divisors is an integer number (37273320).

Almost surely, 2380719911 is an apocalyptic number.

380719911 is a deficient number, since it is larger than the sum of its proper divisors (215653209).

380719911 is a wasteful number, since it uses less digits than its factorization.

380719911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887486.

The product of its (nonzero) digits is 13608, while the sum is 39.

The square root of 380719911 is about 19512.0452797753. The cubic root of 380719911 is about 724.7727617603.

The spelling of 380719911 in words is "three hundred eighty million, seven hundred nineteen thousand, nine hundred eleven".

Divisors: 1 3 11 13 33 39 143 429 887459 2662377 9762049 11536967 29286147 34610901 126906637 380719911