Search a number
-
+
80895380 = 2254044769
BaseRepresentation
bin1001101001001…
…01110110010100
312122012220121012
410310211312110
5131202123010
612005511352
72001412406
oct464456624
9178186535
1080895380
1141732995
1223112558
13139b4ab7
14aa5ab76
15717e005
hex4d25d94

80895380 has 12 divisors (see below), whose sum is σ = 169880340. Its totient is φ = 32358144.

The previous prime is 80895361. The next prime is 80895389. The reversal of 80895380 is 8359808.

It can be written as a sum of positive squares in 2 ways, for example, as 9560464 + 71334916 = 3092^2 + 8446^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80895389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022365 + ... + 2022404.

It is an arithmetic number, because the mean of its divisors is an integer number (14156695).

Almost surely, 280895380 is an apocalyptic number.

It is an amenable number.

80895380 is an abundant number, since it is smaller than the sum of its proper divisors (88984960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80895380 is a wasteful number, since it uses less digits than its factorization.

80895380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044778 (or 4044776 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 80895380 is about 8994.1858997910. The cubic root of 80895380 is about 432.4885091671.

The spelling of 80895380 in words is "eighty million, eight hundred ninety-five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 4044769 8089538 16179076 20223845 40447690 80895380