Search a number
-
+
2782142180 = 225877158617
BaseRepresentation
bin1010010111010100…
…0001111011100100
321011220002110120222
42211311001323210
521144212022210
61140022543512
7125641550456
oct24565017344
97156073528
102782142180
1111a84a0664
12657897b98
13354516b9c
141c56d62d6
151143ad655
hexa5d41ee4

2782142180 has 24 divisors (see below), whose sum is σ = 5849197368. Its totient is φ = 1111580928.

The previous prime is 2782142179. The next prime is 2782142189. The reversal of 2782142180 is 812412872.

2782142180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 906732544 + 1875409636 = 30112^2 + 43306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2782142180.

It is not an unprimeable number, because it can be changed into a prime (2782142189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61769 + ... + 96848.

It is an arithmetic number, because the mean of its divisors is an integer number (243716557).

Almost surely, 22782142180 is an apocalyptic number.

2782142180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2782142180 is an abundant number, since it is smaller than the sum of its proper divisors (3067055188).

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

2782142180 is a wasteful number, since it uses less digits than its factorization.

2782142180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159503 (or 159501 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 2782142180 is about 52746.0157737056. The cubic root of 2782142180 is about 1406.4569394751.

The spelling of 2782142180 in words is "two billion, seven hundred eighty-two million, one hundred forty-two thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 877 1754 3508 4385 8770 17540 158617 317234 634468 793085 1586170 3172340 139107109 278214218 556428436 695535545 1391071090 2782142180